Too Much Light has Far-Reaching Effects on Environment and Human Health

Hunter Savery, Capital News Service • August 22, 2023


Every year it is becoming more and more difficult to see the stars. This problem comes as no surprise to residents of cities like Washington and Baltimore, where it is often difficult to see more than the moon.

 

Although it may not garner the same popular attention as other forms of environmental degradation, light pollution has far-reaching impacts for Earth’s ecosystems and human health.

 

Astronomers at the National Science Foundation’s NOIRLab (which stands for National Optical-Infrared Astronomy Research Laboratory) estimate that light pollution levels are increasing by 10% every year. Children born today in a city where 250 stars can be seen at night will only be able to see 100 by the time they turn 18.

 

Connie Walker, a scientist at NOIRLab, told Capital News Service that increasing light pollution represents a lost cultural heritage.

 

“Just think about (Gustav) Holst in creating the musical composition, ‘The Planets’, or (Vincent) Van Gogh, who did ‘The Starry Night.’ I mean, this is not just astronomy, it's art. If we cut ourselves off from access to the night sky, we're really damaging the opportunities for future generations and the inspiration that provides,” Walker said. “And so it's like cutting off an appendage or something, we're losing part of ourselves. So it's really a kind of imperative for us to take action and try to protect the night sky.”

 

What some may not realize when viewing paintings like “The Starry Night” or “The Night Cafe” is that during Van Gogh’s time the Milky Way really could be seen from the city streets at night. This is how it was for most of human history; change came with the explosion of electric lighting in the 20th Century.

 

However, light pollution is a serious threat beyond cultural heritage. It disrupts our sleep cycles and circadian rhythms, which can put individuals at greater risk of developing a number of cancers, according to researchers at Harvard University.

 

Sleep deprivation also interferes with people’s work and social lives and puts individuals at increased risk for many illnesses including heart disease, kidney disease, high blood pressure, obesity, and depression to name a few.

 

Millions of Americans are missing out on much-needed sleep. The Centers for Disease Control and Prevention (CDC) estimate that at least one in three Americans does not get enough sleep.

 

For animals, the consequences of light pollution can be even more dire.

 

Many animals have evolved to use the moon and stars to guide their way in the night. Sea turtle hatchlings use the moonlight to find their way to the ocean, but in light-polluted areas, the newborns become disoriented and may actually crawl inland. The Florida Fish and Wildlife Conservation Commission estimates that light pollution results in thousands of sea turtle deaths every year.

 

Many communities in the southeastern United States, from Florida to the Carolinas, have ordinances requiring people living on the coast to turn off lights during sea turtle nesting season.

 

Light pollution is also a likely culprit in what some scientists have called the “Insect Apocalypse.”

 

In recent years, global insect populations have plummeted, with as many as 40% of all species around the globe experiencing declines. For example, species that rely on bioluminescence, like fireflies, are unable to find mates among all of the competing lights.

 

Other species that rely on the moon and stars for guidance, like moths, can spend the entire night in disoriented wandering. Some species mistake light bouncing off pavement for the surface of a body of water and mistakenly lay their eggs in the street.

 

One of the challenges to assessing light pollution’s growth is that it doesn’t show up well in satellite data.

 

It is difficult to do longitudinal studies because of the dramatic changes in satellite imaging quality over the years. Even the modern sensors are largely unable to pick up the blue light that is the most biologically disruptive component of light pollution.

 

This is why NOIRLab created the Globe at Night Program, which collects light data from ordinary people around the world. Participants rate their ability to see stars in the sky from wherever they find themselves.

 

Over 277,000 measurements have been submitted since the program began collecting data in 2006. The submissions have been compiled into interactive maps and datasets available to the public that give a better snapshot of light pollution than standard satellite imagery.

 

Reducing light pollution is far from a Herculean task, according to Jim Dougherty, an environmental attorney and president of the International Dark-Sky Association’s D.C. Chapter. One easy fix is making sure that lights are properly covered so that the light is aimed down and not shooting off towards the night sky.

 

“Here in D.C., the light fixture that we love to hate is the globe, which sends maybe 70% of its light straight up into the sky and serves no purpose whatsoever,” Dougherty told CNS. “That’s what we do in our homes, right? We don’t have bare light bulbs over the dining room table, we have lamps shades and covers.”

 

Alongside better covered lights, the IDA advocates for dimmer and warmer lights overall. While some cities such as Pittsburgh have moved towards dimmer lights, Baltimore has been growing brighter with an increased number of electronic billboards.

 

In Washington recently, the Smithsonian Institution’s National Museum of Natural History launched an exhibit titled “Lights Out: Recovering Our Night Sky.” The temporary exhibit features over 100 photographs, 250 objects and interactive experiences underscoring the importance of nighttime darkness.

 

For many people, brighter streets are associated with safety and crime prevention.

 

“That’s a common reaction. And there’s very little truth to it,” Dougherty said. In fact, studies have shown that brighter streets have little impact on crime. One study out of Chicago actually found that increasing the brightness of alleyways corresponded with a significant increase in crime.

 

 

Capital News Service is a student-powered news organization run by the University of Maryland Philip Merrill College of Journalism. For 26 years, they have provided deeply reported, award-winning coverage of issues of import to Marylanders.


Common Sense for the Eastern Shore

By John Christie December 16, 2025
When I practiced law, much of my litigation involved issues arising under federal antitrust laws. The Department of Justice (DOJ) was my frequent adversary in court. In some cases, DOJ challenged a client’s conduct as anticompetitive. In others, they claimed an intended client merger would create a monopoly. Some of these DOJ court battles were won, others were not. Overall, I had great respect for DOJ lawyers. They were professional, well prepared, and dedicated to their mission of seeing justice done. They were courteous, honest, and forthright with the courts before which we argued our cases. In those days, without resorting to social media or press conferences, the DOJ spoke entirely through its court filings. Although as an advocate I took issue with various DOJ investigatory decisions as well as decisions to initiate litigation, I never thought politics was involved. Post-Watergate internal rules strictly limited communication with any figures at the White House. Not so, it seems, anymore. Beginning last January 20, all of this changed rapidly and spectacularly . On March 14, Trump triumphantly arrived at the main DOJ building in D.C. to be welcomed by a group of carefully selected VIPs. He was greeted by Pam Bondi, his chosen new attorney general, who exclaimed, “We are so proud to work at the directive (sic) of Donald Trump.” Bondi’s boast that the DOJ now worked at the president’s behest was something never said before and, in effect, surrendered the department’s long and proud independence. And Bondi’s comment was not an empty gesture. As chronicled by reporters Carol Leonnig and Aaron Davis in their new book, Injustice: How Politics and Fear Vanquished America’s Justice Department , within hours of being sworn in, Trump and his lieutenants began punishing those at the Justice Department who had investigated him or those he considered his political enemies. Career attorneys with years of experience under many administrations were fired or reassigned to lesser work, or they resigned. As Leonnig and Davis report, what followed was “the wholesale overthrow of the Justice Department as Trump insert[ed] his dutiful former defense attorneys and 2020 election deniers atop the department.” [Source: Injustice , p. xix.] In the place of years of experience, the new team appears credentialed simply by loyalty to the president’s causes. The DOJ’s conduct in court has since caused damage to judicial and public faith in the integrity and competence of the department. Just Security is an independent, non-partisan, daily digital law and policy journal housed in the Reiss Center on Law and Security at the New York University School of Law. Since January 20, it has documented federal judicial concerns about DOJ conduct. In 26 cases, judges raised questions about DOJ non-compliance with judicial orders and in more than 60 cases, judges expressed distrust of government-provided information and representations. This count was taken the day after a federal court dismissed the DOJ cases against former FBI Director James Comey and New York Attorney General Letitia James. [Source: Just Security , “The ‘Presumption of Regularity’ in Trump Administration Litigation,” Nov. 20, 2025.] As summarized by the Georgetown Law Center’s Steve Vladeck, “It’s one thing for the Department of Justice to so transparently pursue a politically motivated prosecution. But this one has been beset from the get-go with errors that remotely competent law students wouldn’t make. Indeed, it seems a virtual certainty that the Keystone Kops-like behavior of the relevant government lawyers can be traced directly to the political pressure to bring this case; there’s a reason why no prosecutors with more experience, competence, or integrity were willing to take it on.” [Source: One First , Nov. 24, 2025.] Rather than accept criticism and instead of trying to do better, Bondi’s DOJ and the Trump administration lash out in a fashion apparently aimed at demeaning the federal judiciary. At a recent Federalist Society’s National Lawyers Convention, Deputy Attorney General Todd Blanche, one of Trump’s former defense attorneys, attributed the Trump administration’s myriad losses in the lower federal courts to “rogue activist judges.” He added, “There’s a group of judges that are repeat players, and that’s obviously not by happenstance, that’s intentional, and it’s a war, man.” Deputy Chief of Staff Stephen Miller decries each adverse ruling against the Trump administration as just part of a broader “judicial insurrection.” Not to be left behind, Trump himself regularly complains of “radical left lunatic” judges. In addition to the harm these comments inflict on the federal courts, their premise is simply not true. According to a survey by Vladeck, as of Nov. 14, there were 204 cases in which federal district courts have ruled on requests for preliminary relief against the Trump administration. In 154 of them, district judges granted either a temporary restraining order, a preliminary injunction, or both. Those 154 rulings came from 121 district judges appointed by seven presidents (including President Trump) in 29 district courts. In the 154 cases with rulings adverse to the Trump administration, 41 were presided over by 30 Republican-appointed judges, fully half of whom were appointed by President Trump. No, it is no longer your grandfather’s Department of Justice. John Christie was for many years a senior partner in a large Washington, D.C. law firm. He specialized in anti-trust litigation and developed a keen interest in the U.S. Supreme Court about which he lectures and writes.
By CSES Staff December 16, 2025
The Salisbury City Council has appointed longtime public servant Melissa D. Holland to fill the vacancy in District 2. Holland was selected on Dec. 1 after the council reviewed several applicants. A 27-year resident of Salisbury, Holland brings more than 20 years of experience in government, education, and administration. As executive assistant to the president of the University of Maryland Center for Environmental Science, she currently oversees operations, budgeting, communications, and planning. Before joining UMCES, Holland worked for nearly 11 years with the Wicomico County Council, gaining extensive experience in legislative procedure, constituent services, research, and budget preparation. Her background includes positions with the Wicomico County Board of Education, the State of Maryland’s Holly Center, and multiple early-learning programs. Approved by a 3-1 council vote, Holland was selected based on her administrative expertise and long-standing community involvement. (Salisbury’s City Council is now comprised of only women.) She has a bachelor’s degree in legal studies from Post University and an associate degree from Wor-Wic Community College. She has also served as PTA president at East Salisbury Elementary and Wicomico Middle School. In her application, Holland emphasized her commitment to maintaining transparency in city government and ensuring that District 2 residents remain informed and represented. “I plan to be well-informed on the issues that matter to the citizens of Salisbury and to listen to their concerns carefully,” she wrote. “I want to make a positive and lasting impact on our city.” Holland’s appointment restores the City Council to full membership as it faces debates over budgeting, infrastructure planning, and local governance initiatives. She is expected to begin constituent outreach immediately and participate fully in the selection of the next council president.
By CSES Staff November 4, 2025
Voters in Hurlock have delivered sweeping changes in this year’s municipal election, as Republican and GOP-aligned candidates won key races there. The results mark a setback for Democrats and a significant political shift in a community that has historically leaned Democratic in state and federal contests. The outcome underscores how local organizing and turnout strategies can have an outsized impact in small-town elections. Analysts also suggest that long-term party engagement in municipal contests could shape voter alignment in future county and state races. Political analysts warn that ignoring municipal elections and ceding them to the GOP could hurt the Maryland Democratic Party in statewide politics. Turnout increased by approximately 17% compared with the 2021 municipal election, reflecting heightened local interest in the mayoral and council races. Incumbent Mayor Charles Cephas, a Democrat, was soundly defeated by At-Large Councilmember Earl Murphy, who won with roughly 230 votes to Cephas’s 144. In the At-Large Council race, Jeff Smith, an independent candidate backed by local Republicans, secured a 15-point win over Cheyenne Chase. In District 2, Councilmember Bonnie Franz, a Republican, was re-elected by 40 percentage points over challenger Zia Ashraf, who previously served on the Dorchester Democratic Central Committee. The only Democrat to retain a seat on the council was David Higgins, who was unopposed. The Maryland Republican Party invested resources and campaign attention in the Hurlock race, highlighting it on statewide social media and dispatching party officials, including Maryland GOP Chair Nicole Beus Harris, to campaign. Local Democrats emphasized support for Mayor Cephas through the Dorchester County Democratic Central Committee, but the Maryland Democratic Party did not appear to participate directly.
By CSES Staff November 4, 2025
In what political observers are calling a clear break from Maryland’s moderate Republican establishment, Wicomico County Executive Julie Giordano chose former Gov. Bob Ehrlich — not former Gov. Larry Hogan — as the guest of honor at her re-election fundraiser in late October. Billed as Giordano’s annual Harvest Party, her event drew conservative activists from across the lower Eastern Shore and featured Ehrlich as keynote speaker. This was immediately read by insiders as a signal that Giordano will embrace the party’s right-wing base ahead of 2026, distancing herself from Hogan’s more centrist, bipartisan image. “Bringing in Bob Ehrlich instead of Larry Hogan wasn’t accidental,” one longtime Republican strategist said. “It shows Giordano wants to plant her flag with the MAGA-aligned wing of the party, the same voters who now dominate Maryland’s Republican primary base.” Hogan, who has hinted at another run for governor, was notably absent from this year’s Tawes Crab and Clam Bake in Somerset County, a high-profile gathering long considered essential for statewide contenders. Coupled with Giordano’s public alignment with Ehrlich, Hogan’s absence has fueled speculation that his influence within Maryland’s GOP is slipping. Those doubts were amplified by new polling data. A statewide survey commissioned by the Baltimore Banner found Gov. Wes Moore (D) leading Hogan 45% to 37% in a hypothetical 2026 matchup, with 14% undecided. The poll, conducted by phone and web from Oct. 7–10 among more than 900 registered voters, carries a margin of error of 3.2 percentage points. The results suggest that while Hogan remains popular among moderates and independents, Moore continues to hold a firm advantage statewide, particularly among Democrats and younger voters. Giordano’s decision to align herself with Ehrlich rather than Hogan further illustrates the ideological divide defining Maryland Republicans heading into 2026. As the party drifts further to the right, analysts say Hogan’s brand of pragmatic centrism may no longer have a natural home in today’s GOP. For now, Ehrlich’s appearance in Salisbury is being seen as a symbolic moment, one that cements Giordano’s status as a leading figure in the state’s Trump-aligned movement and underscores how quickly the political winds have shifted. For Hogan, once seen as the Republican best positioned to reclaim the governor’s office, that shift may mark the end of an era.
By Jan Plotczyk November 4, 2025
Can Maryland create a new congressional map that will flip the state’s sole Republican district to the Democrats? Gov. Wes Moore has created a Governor's Redistricting Advisory Commission to consider mid-cycle redistricting and Maryland has jumped into the redistricting fray. The commission will conduct public hearings, solicit public feedback, and present recommendations to the governor and Maryland General Assembly. “My commitment has been clear from day one — we will explore every avenue possible to make sure Maryland has fair and representative maps,” said Moore. “And we also need to make sure that, if the president of the United States is putting his finger on the scale to try to manipulate elections because he knows that his policies cannot win in a ballot box, then it behooves each and every one of us to be able to keep all options on the table to ensure that the voters’ voices can actually be heard .” Moore’s commission is one of those options — a response to Trump’s call to Republican-led states to create more GOP House districts before the 2026 midterm elections. Three GOP states — Texas, Missouri, and North Carolina — have completed a Trump gerrymander for a gain of seven seats and three more states — Indiana, Utah, and Ohio — could create new maps with a total of four additional Republican seats. That would make 11, should they withstand challenges. Democratic-led states made a lot of noise at first about countering these GOP efforts, but only California and Virginia have campaigns for new maps underway. California wants to flip five seats and Virginia hopes for up to four. Optimistically, that could add up to as many as nine. Maryland’s goal would be to add one Democratic seat. Other states on both sides could soon follow, in some cases taking advantage of existing redistricting deadlines or ongoing litigation. Maryland State Senate President Bill Ferguson (D-Balto City) is not in favor of mid-cycle redistricting, calling it too dicey. “Simply put, it is too risky and jeopardizes Maryland’s ability to fight against the radical Trump administration. At a time where every seat in Congress matters, the potential for ceding yet another one to Republicans here in Maryland is simply too great,” Ferguson wrote in a letter to Senate Democrats. Rep. Andrew P. Harris (R-MD01), whose district would be targeted by redistricting, called the effort "the most partisan thing you could do." He whined, “It just wouldn’t be fair.” Harris warned that any redistricting could backfire on the Democrats. “We will take this to court, it will go as high as necessary, and in the end, a judge could draw a map that actually has two or three Republican congressmen,” Harris said. “I’d caution the Democrats, be careful what you wish for.” Harris and his wife, Maryland GOP Chair Nicole Beus Harris, have perhaps already worked out a strategy. The Governor’s Redistricting Advisory Commission, last constituted by Gov. Martin O’Malley in 2011, will begin its work this month. The five-member commission includes: Chair: Senator Angela Alsobrooks Senate President Bill Ferguson or designee Speaker Adrienne A. Jones or designee Former Attorney General Brian Frosh Cumberland Mayor Ray Morriss “We have a president that treats our democracy with utter contempt. We have a Republican party that is trying to rig the rules in response to their terrible polling,” said Sen. Alsobrooks. “Let me be clear: Maryland deserves a fair map that represents the will of the people. That’s why I’m proud to chair this commission. Our democracy depends on all of us standing up in this moment.” Will Maryland’s First District finally be competitive? Can we at long last replace “AWOL Andy” Harris? Stay tuned…. Jan Plotczyk spent 25 years as a survey and education statistician with the federal government, at the Census Bureau and the National Center for Education Statistics. She retired to Rock Hall.
By CSES Staff November 4, 2025
In strong numbers, local residents turned out last month for a community information session on offshore wind hosted by the Alliance for Offshore Wind at the Ocean Pines library. The forum heard from industry experts, environmental advocates, and labor leaders to discuss how offshore wind projects can support jobs, clean energy, and coastal resilience along Maryland’s Eastern Shore. Featured were Sam Saluto of Oceantic, Jim Strong of the United Steelworkers, Ron Larsen of Sea Ink Solutions, and Jim Brown of the Audubon Society, all of whom emphasized the long-term environmental and economic benefits of wind development off Maryland’s coast. Speakers outlined how the project, once completed, is expected to create hundreds of high-paying jobs, generate clean power for tens of thousands of homes, and reduce reliance on fossil fuels that cause pollution and coastal erosion. “The potential here is extraordinary,” said Saluto, highlighting Oceantic’s ongoing work to ensure safety and sustainability standards remain at the highest level. “We’re not just talking about wind turbines. We’re talking about revitalizing local economies and protecting the Shore’s way of life.” Union representative Jim Strong echoed that sentiment, noting that Maryland’s labor community sees offshore wind as a chance to rebuild domestic manufacturing capacity while giving workers access to strong wages and long-term stability. Environmental voices, including Jim Brown of the Audubon Society, focused on how properly sited wind projects can reduce carbon emissions while coexisting with marine wildlife and migratory bird patterns. While most of the evening centered on data and community questions, the event briefly turned tense when Ocean City Mayor Rick Meehan, who is leading a lawsuit challenging Maryland’s offshore wind plans, attempted to question the panel. The mayor appeared to lose his train of thought mid-sentence and later cast doubt on the reality of climate change, drawing visible concern from several attendees. Meehan, a New Yorker who moved to Ocean City in 1971 and has held public office since 1985, has become one of the region’s most vocal opponents of offshore wind. His critics argue the lawsuit represents an effort to stall progress rather than engage with the facts presented by energy, labor, and environmental experts. Despite the brief exchange, the overall tone of the evening was forward-looking. Residents lingered after the formal discussion to review informational materials, speak with industry representatives, and learn about opportunities for community involvement. For many, the message was clear: Maryland’s transition to clean energy is not only feasible, it’s already underway, and the Eastern Shore stands to benefit.
Show More