New report ranks the cleanest and most polluted U.S. cities
The new report evaluated air quality in different parts of the country by measuring the presence of ozone and particle pollution in the atmosphere.
ClimateWatch: Climate Change News & Features
Using the ocean to power data centers
The renewable energy company Panthalassa says it has a solution to the proliferation of AI data centers, which consume massive amounts of energy and are the cause of increased carbon pollution: sea-based data centers, powered by wave energy.
March smashed heat records in several ways, federal data shows
Last month was the hottest March on record for the Lower 48 states, by the most for any month ever, federal data shows. And a forecast El Niño could heat Earth even more.
Emperor penguins listed as endangered species
The emperor penguin has been declared an endangered species as climate change pushes the icon of Antarctica a step closer to extinction, the global authority on threatened wildlife says.
EPA chief Lee Zeldin tells climate skeptics to "celebrate vindication"
The head of the Environmental Protection Agency on Wednesday defended his decision to repeal the legal determination that serves as the basis for federal rules to slow climate change.
The West's historic snow drought could bring water shortages, wildfires
The western United States experienced a severe snow drought this year, threatening the region's water supply and potentially setting the stage for its wildfire season.
Sea levels higher than thought due to "methodological blind spot," study says
A new study in the journal Nature says most sea level rise research may have underestimated coastal water heights by an average of 1 foot.
El Niño could return this year and make Earth even hotter
The weather phenomenon known as El Niño could form later this year, potentially pushing global temperatures to record heights, researchers say.
Supreme Court to weigh energy companies' bid to end state climate change suits
The Supreme Court agreed to take up an effort by energy companies to end a lawsuit filed in state court that seeks billions of dollars in damages.
In a first, shark seen on camera in Antarctica waters, surprising researchers
A large shark was caught on camera for the first time in Antarctica's waters, surprising researchers. "There's a general rule of thumb that you don't get sharks in Antarctica," one said.
How Washington's crossing of the Delaware presaged a changing world
On the evening of Christmas 1776, Gen. George Washington surprised the King's forces by leading the Continental Army in a surprise crossing of a near-frozen Delaware River - a watershed military maneuver that dramatized a changing America, and a changing climate.
Trump's EPA revokes the "endangerment finding." Here's what to know.
The Trump administration says greenhouse gases emitted from sources like cars, trucks and power plants will no longer be regulated by the federal government.
"Black carbon" in Arctic an increasing concern amid other issues in region
"Black carbon," or soot, that spews from ships and makes the Artic Ocean ice melt even faster is an increasing concern in a region beset with many other issues.
Wildfire smoke pollution linked to 24,100 U.S. deaths per year, study finds
"Our message is: Wildfire smoke is very dangerous. It is an increasing threat to human health," said a study author.
Scientists "quite surprised" to find one polar bear population thriving
After decades monitoring polar bears in Norway's far north, researchers say the animals have proven incredibly adaptable, but there are no guarantees for the future.
Winter storm doesn't disprove climate change, despite Trump's claim
President Trump cited a major winter storm as evidence to suggest that global warming does not exist — a misleading claim that has been consistently debunked by climate experts.
World is entering era of "water bankruptcy," U.N. report warns
Water sources are being depleted faster than they can be restored, according to a new report from United Nations researchers.
Massive bluefin tuna fetches record $3.2 million at Tokyo auction
A massive 535-pound bluefin tuna sold for a record 510 million yen ($3.2 million) at the first auction of 2026 at Tokyo's Toyosu fish market.
2025 was so hot it pushed Earth past critical climate change mark
2025 was the third hottest year on record and pushed Earth past a critical climate change mark, scientists say.
Major climate research center on Trump administration chopping block
The Trump administration intends to dismantle one of the world's leading climate research institutions, in Boulder, Colorado, over what it said were concerns about "climate alarmism."
Arctic temperatures rising twice as fast as elsewhere, NOAA report says
Temperatures in the Arctic continue to follow a long-term warming trend, according to the National Oceanic and Atmospheric Administration.
Researchers lower estimate of drop in global income due to climate change
The researchers, writing in the journal Nature in 2024, had forecast a 19% drop in global income by 2050. Their revised analysis puts the figure at 17%.
SpaceX launches second satellite to monitor sea level changes
The Sentinel-6B is the second of two satellites in a $1 billion program to monitor sea levels over a full decade.
As Trump skips U.N. climate summit, Newsom hurls criticism from Brazil
The Trump administration sent nobody to the U.N. global climate summit, leaving California Governor Gavin Newsom to ask, "What the hell is going on here?"
U.N. climate talks start in Brazil: "We need to accelerate the fight"
U.N. climate negotiations get underway in Brazil, with leaders urging urgency and cooperation to curb global warming. The Trump administration is not participating.
Science
Salmon exposed to cocaine swim almost twice as far, study shows
Researchers studied how the drug affected the movements of wild fish in their natural habitats.
Mars rover carries out chemistry experiment never done beyond Earth
"This experiment's never been run before on another world," said Amy Williams, an astrobiologist working on the Curiosity mission.
Cementing a more sustainable alternative to concrete
The process of making 30 billion tons of concrete every year produces more carbon pollution than all the world's ships and planes put together. Now, the North Carolina and Denmark-based Biomason is using biotechnology, including naturally-occurring microbes, to create "biocement" that's just as sturdy but emits much less CO2. David Pogue reports.
Breeding a better bread
Over the past century, the cultivation and processing of wheat has led to strains of grain that are less nutritious, less flavorful, and more vulnerable to climate change. The researchers at Breadlab, at Washington State University, are trying to breed varieties of whole grains that are better for farmers, consumers – and taste buds. David Pogue reports.
Using the ocean to power data centers
The renewable energy company Panthalassa says it has a solution to the proliferation of AI data centers, which consume massive amounts of energy and are the cause of increased carbon pollution: sea-based data centers, powered by wave energy.
Using the ocean to power data centers
The renewable energy company Panthalassa says it has a solution to the proliferation of AI data centers, which consume massive amounts of energy and are the cause of increased carbon pollution: sea-based data centers, powered by wave energy. Correspondent David Pogue examines what Panthalassa's alternative to land-based data centers may mean.
First major forecast for 2026 Atlantic hurricane season is released
Colorado State University has released its annual Atlantic hurricane forecast, predicting 13 named storms and six hurricanes may develop during the 2026 season.
Creature thought to be world's oldest octopus isn't an octopus after all
Scientists have found evidence that a 300-million-year-old sea creature previously thought to be the world's oldest octopus is actually a nautilus relative.
March smashed heat records in several ways, federal data shows
Last month was the hottest March on record for the Lower 48 states, by the most for any month ever, federal data shows. And a forecast El Niño could heat Earth even more.
Emperor penguins listed as endangered species
The emperor penguin has been declared an endangered species as climate change pushes the icon of Antarctica a step closer to extinction, the global authority on threatened wildlife says.
Stunning photos from Artemis II show Earth, moon, eclipse from space
The astronauts aboard Artemis II are the first humans to see some parts of the far side of the moon with the naked eye.
Artemis II astronauts speak during historic lunar mission
On Monday, the astronauts aboard the Artemis II spacecraft will loop around the Moon's far side, part of a mission pushing human beings farther from Earth than anyone has ever been. Correspondent Mark Strassmann talked with commander Reid Wiseman, pilot Victor Glover, and mission specialists Christina Koch and Jeremy Hansen as the crew was about 180,000 miles from home, preparing for their historic lunar flyby.
Artemis II crew begins "crazy first day" in space after exhilarating launch
NASA's Artemis II astronauts will spend about 24 hours orbiting the Earth and running checks on their spacecraft and life support systems before heading to the moon.
CBS News studio shakes as Artemis II launches
Four astronauts are traveling around the moon on Artemis II, going further from Earth than anyone before. CBS News' Mark Strassmann and Peter King have more.
What Artemis II astronauts will do in space
Former NASA astronaut Clayton Anderson joins CBS News to discuss what the Artemis II astronauts will do as they orbit the Earth after takeoff.
U.S.
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Compare the candidates for California governor, side by side, on the issues that matter to you
Compare the candidates for California governor with the CBS News California Investigates Side-by-Side Candidate Guide.
Remains found of 3 Memphis children may have been there for years, police say
Memphis authorities say they are investigating the discovery of remains of three children, believed to be between 3 and 7 years of age, that could have been there for years.
All U.S. attorney's offices must assign a prosecutor to new fraud division: Memo
In the memo, Assistant Attorney General Colin McDonald said detailing a prosecutor from each U.S. attorney's office is aimed to help "execute a nationwide strategy to eliminate fraud in every district."
Two home explosions on same San Antonio block injure 5
Five people were injured when explosions occurred several hours apart at two homes on the same block of a north San Antonio neighborhood.
"A breaking point": Inside the 68-day DHS shutdown
In a department built to respond to catastrophic threats, employees have been reduced to bartering for office supplies.
MoneyWatch
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Rents around the U.S. are growing more slowly than they have in years
The cost of renting a home, which surged during the pandemic, is showing signs of returning to earth, new data shows.
Crypto mogul sues Trump family's World Liberty Financial, alleging fraud
Sun alleges that World Liberty Financial froze the digital tokens he had purchased, locking him out of assets worth as much as $1 billion.
Anthropic investigating possible breach of its Mythos AI model
The AI company behind the chatbot Claude is looking into a report of unauthorized access to Mythos from one of its third-party vendor environments.
Trump Media replaces CEO Devin Nunes as its losses top $1 billion
The company behind Truth Social has lost more than $1 billion since going public two years ago, while its shares have tumbled 58% during the past 12 months.
Condom maker warns prices may rise due to Iran war supply disruptions
Karex, which calls itself the "world's largest condom maker," could hike the company's prices by 20% to 30%, its CEO told Reuters.
Politics
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Senate begins "vote-a-rama" as GOP moves forward with funding ICE without Democrats
The Senate began what's expected to be a marathon vote series, as Republicans move ahead with a plan to fund immigration agencies under the Department of Homeland Security without help from Democrats.
All U.S. attorney's offices must assign a prosecutor to new fraud division: Memo
In the memo, Assistant Attorney General Colin McDonald said detailing a prosecutor from each U.S. attorney's office is aimed to help "execute a nationwide strategy to eliminate fraud in every district."
Judge blocks Virginia from using new House maps, 1 day after redistricting vote
A state court judge on Wednesday blocked Virginia from moving forward with a redistricting effort that passed a day earlier, a roadblock in Democrats' efforts to redraw the state's congressional maps.
"A breaking point": Inside the 68-day DHS shutdown
In a department built to respond to catastrophic threats, employees have been reduced to bartering for office supplies.
Senate defeats Democrats' 5th attempt to limit Trump's war powers in Iran
The Senate rejected another attempt to rein in President Trump's ability to use further military force against Iran, marking Democrats' fifth effort to do so since the war began eight weeks ago.
HealthWatch
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Medigap premiums leap, and consumers have few alternatives
Millions of people rely on the supplemental insurance to offset the deductibles, copayments, and other costs faced by enrollees in the traditional Medicare program.
Food stamp work rules don't increase employment, researchers say
Work requirements will encourage people who are able to work to seek and maintain jobs, proponents say. But researchers haven't found that they lower the unemployment rate.
New CDC pick may face "threat to follow ideology over evidence," ex-official says
Former Trump Surgeon General Dr. Jerome Adams described Dr. Erica Schwartz as a "home run pick."
Trump signs executive order to research psychedelics for mental health
The order will open the door for more research into psychedelic drugs, including ibogaine, sources told CBS News earlier this week.
Mom's labor turns into fight for life after 1 symptom: "I think I'm about to die"
Casey Gould wanted to be a mom her whole life. Her long-awaited pregnancy went smoothly — until she saw something alarming.
World
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Hungary drops veto, clearing path for $106 billion EU loan to Ukraine
The move may signal a more constructive relationship between Ukraine and the European Union following the ouster of Hungarian Prime Minister Viktor Orbán earlier this month.
Mexico weighs action after CIA agents die in crash following drug lab raid
Mexican President Claudia Sheinbaum said the government is still investigating a potential violation of national security laws in the incident.
Spain's undocumented migrant amnesty draws big lines, and a big backlash
As thousands of undocumented migrants line up to apply for amnesty under a new program in Spain, the prime minister's opponents vow a fight.
Iran's military more capable than Trump admin. is acknowledging, sources say
About half of Iran's stockpile of ballistic missiles and its associated launch systems were still intact as of the start of the ceasefire in early April, officials said.
1 of 6 missing crew found dead after typhoon flipped U.S.-flagged ship
The crew of the Mariana notified the U.S. Coast Guard on April 15 that the 145-foot vessel lost its starboard engine during Super Typhoon Sinlaku.
Entertainment
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Entertainment
DiCaprio speaks at 2016 Paris Agreement signing
On April 22, 2016, the U.N. held a signing ceremony for the Paris Agreement, an international treaty aimed at curbing climate change, featuring several speakers from various nations, including actor and environmental activist Leonardo DiCaprio. Watch his full speech from the event.
Donnie Wahlberg talks "Boston Blue" success
Donnie Wahlberg talks about starring in the series "Boston Blue" and the emotional moments he shared with the cast members when he revealed the show was being renewed for a second season. He also discusses if his wife, Jenny McCarthy, could make an appearance on the show.
Vinyl record sales continue resurgence
New data shows interest in vinyl records is only getting stronger, with social media and and special releases from artists like Taylor Swift helping drive the trend. Jarred Hill has more.
Opening statements in Weinstein rape retrial
Opening statements have concluded in Harvey Weinstein's New York rape retrial. CBS News' Jericka Duncan has more.
D4vd charged with murder in14-year-old's death
Singer D4vd appeared in court Monday, hours after prosecutors announced he would be charged with first-degree murder in the death of 14-year-old Celeste Rivas Hernandez. Matt Gutman reports.
Technology
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Technology
How to dispose of e-waste this Earth Day
Tuesday marks Earth Day, and if you have any unused devices at home, there are green ways to dispose of them. CNET senior technology reporter Abrar Al-Heeti joins CBS News to discuss.
Meta to track workers' computer use to train AI
Business Insider got a look at an email Meta, the parent company of Facebook, sent to all employees, letting them know that it would start tracking their interactions with their computers to train the company's artificial intelligence. Business Insider tech correspondent Charles Rollet joins to discuss.
How AI powered robots are helping small farms
From labor shortages to environmental impacts, farmers are looking to AI to help revolutionize the agriculture industry. One California startup, Farm-ng, is tapping into the power of AI and robotics to perform a wide range of tasks, including seeding, weeding and harvesting.
Trump Media replaces CEO Devin Nunes as its losses top $1 billion
The company behind Truth Social has lost more than $1 billion since going public two years ago, while its shares have tumbled 58% during the past 12 months.
Duffy on AI replacing air traffic controllers: "That's not gonna happen"
"Am I gonna replace a controller and have AI manage the airspace? The answer to that is hell no, that's not gonna happen," Transportation Secretary Sean Duffy told CBS News.
Science
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Salmon exposed to cocaine swim almost twice as far, study shows
Researchers studied how the drug affected the movements of wild fish in their natural habitats.
Mars rover carries out chemistry experiment never done beyond Earth
"This experiment's never been run before on another world," said Amy Williams, an astrobiologist working on the Curiosity mission.
Cementing a more sustainable alternative to concrete
The process of making 30 billion tons of concrete every year produces more carbon pollution than all the world's ships and planes put together. Now, the North Carolina and Denmark-based Biomason is using biotechnology, including naturally-occurring microbes, to create "biocement" that's just as sturdy but emits much less CO2. David Pogue reports.
Breeding a better bread
Over the past century, the cultivation and processing of wheat has led to strains of grain that are less nutritious, less flavorful, and more vulnerable to climate change. The researchers at Breadlab, at Washington State University, are trying to breed varieties of whole grains that are better for farmers, consumers – and taste buds. David Pogue reports.
Using the ocean to power data centers
The renewable energy company Panthalassa says it has a solution to the proliferation of AI data centers, which consume massive amounts of energy and are the cause of increased carbon pollution: sea-based data centers, powered by wave energy.
Crime
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Remains found of 3 Memphis children may have been there for years, police say
Memphis authorities say they are investigating the discovery of remains of three children, believed to be between 3 and 7 years of age, that could have been there for years.
Parents of slain Loyola freshman speak out
The parents of Sheridan Gorman, the Loyola University student who police say was gunned down last month by an undocumented immigrant, spoke out for the first time with CBS News' Matt Gutman.
Car crashes into Philadelphia police station
Surveillance video shows the moment a car came crashing through a police station in Philadelphia. Five people were taken to the hospital and police say they believe the incident was intentional. Shanelle Kaul reports.
OpenAI, ChatGPT under investigation
OpenAI and ChatGPT are under investigation by Florida officials after a deadly shooting last year at Florida State University. Prosecutors allege the AI bot offered "significant advice" to the suspect just days before the shooting. OpenAI says its chatbot is not responsible. Jo Ling Kent reports.
Man charged for having gun used by Louisiana shooter says it was stolen
The assault-style rifle used to kill eight children in a Louisiana mass shooting was stolen from a truck, the gun's previous owner said.
Space
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Mars rover carries out chemistry experiment never done beyond Earth
"This experiment's never been run before on another world," said Amy Williams, an astrobiologist working on the Curiosity mission.
Blue Origin New Glenn rocket puts satellite payload into wrong orbit
The launching appeared to go off without a hitch, but a problem prevented the rocket's upper stage from putting its payload into the correct orbit.
Artemis II crew on historic moon mission and what it means for Earth
"We are carrying back everything we learned, not only about where we went but ourselves," mission specialist Christina Koch told "CBS Evening News" anchor Tony Dokoupil.
Artemis II astronauts still awed by moonshot experience: "It was otherworldly"
The four Artemis II astronauts struggled to describe the view and overall experience of flying around the moon's far side and witnessing a solar eclipse in deep space.
"God of chaos" asteroid will pass close to Earth in 3 years, NASA says
People on the ground in the Eastern Hemisphere will be able to observe the asteroid with their own eyes, weather permitting, according to NASA.
Latest Galleries
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Notable Deaths in 2026
A look back at the esteemed personalities who've left us this year, who'd touched us with their innovation, creativity and humanity.
Evidence in the Barbara Kendhammer case
Does the evidence show a cover-up, or was Todd Kendhammer wrongfully convicted for the murder of his wife?
The life & near death of prizefighter Christy Salters-Martin
Christy Salters-Martin dominated in the boxing ring but faced her toughest challenger at home.
Timeline: The disappearance of George Smith
Family seeks answers in death of newlywed who disappeared in 2005 while on Mediterranean honeymoon cruise.
Who is Alix Tichelman?
Meet the tattooed beauty charged in the death of Google executive Forrest Hayes.
Latest CBS News Videos
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4/22: CBS Evening News
Georgia streets reduced to ashes amid massive wildfires; Trump administration considers bailout for Spirit Airlines.
Reporter goes viral for her wicked accent
One reporter in Boston is the internet's favorite new source because of her wicked cool accent. Boston Globe reporter Emily Sweeney joins "The Daily Report" to discuss going viral.
Southern Poverty Law Center charges explained
The Justice Department is bringing nearly a dozen charges against the Southern Poverty Law Center, including fraud. CBS News legal contributor Jessica Levinson breaks down the charges.
Kalshi suspends candidates for insider trading
Prediction market site Kalshi has fined and suspended three political candidates from its site for "political insider trading." CBS News senior business and tech correspondent Jo Ling Kent has more details.
Inmates raising service dogs as rehabilitation
The Prison Policy Initiative says 96% of incarcerated people will one day return to their communities. That's why California's system is leaning into rehabilitation. CBS News Bay Area's Max Darrow goes inside a facility where one of the methods involves puppies.