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
Trump administration fires board overseeing National Science Foundation
The Trump administration has fired all 22 current members of an independent board that oversees the National Science Foundation, one dismissed member says.
AI used to reveal face of victim fleeing Mount Vesuvius eruption
Archaeologists found the victim holding a terracotta mortar, which they interpret as an improvised attempt to shield his head.
In a first, endangered orangutan seen using canopy bridge to cross road
Rapid development has been shrinking the jungle habitat of the critically endangered species, and fatal conflicts with people have been increasing.
Saving the Venus fly trap
The carnivorous Venus fly trap is native to the Carolinas, but its population is dwindling due to loss of habitat. Correspondent Seth Doane talks with botanist Julie Moore, who has spent much of her life helping to save these remarkable plants; and with Damon Waitt, director of the North Carolina Botanical Garden, who discusses the unusual traits of a species that Charles Darwin called the most interesting plant in the world.
From 1990: NASA launches Hubble Telescope
On April 24, 1990, NASA launched the Hubble Space Telescope from the Space Shuttle Discovery after seven years of delays. Watch CBS News' coverage from that day.
60-foot octopus ruled the seas during age of dinosaurs, fossils show
New analyses of fossilized jaws reveal that massive, kraken-like octopuses once hunted alongside other marine predators.
Mysterious "golden orb" found in deep sea in 2023 is finally identified
Scientists spent over two years identifying a mysterious object found off the coast of Alaska in 2023.
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.
U.S.
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Judge tosses Trump admin. lawsuit seeking access to Arizona voter data
A federal judge on Tuesday dismissed a lawsuit from the Justice Department seeking information on Arizona voters, another defeat in the Trump administration's nationwide push for voter data.
NCAA March Madness tournaments could expand to 76 teams in 2027
The new format would add eight more at-large teams, and take eight more teams out of the main bracket for play-in games.
Gunshot at dinner may have struck officer's phone in pocket of bulletproof vest
Officials investigating the shooting at the White House Correspondents' Dinner said they estimated the suspect was running at about 9 miles per hour when he sprinted through a checkpoint and discharged his shotgun.
Analysis: Dinner shooting brings reminders of past era of political violence
For historians, the 1960s and 1970s provide particularly eerie parallels to the present. Both eras were marked by bitter political divides and the unsettling feeling that America's social fabric was being ripped apart.
Feds have rejected 15% of businesses' tariff refund claims
But after some early hiccups, the U.S. government's hub for businesses seeking tariff refunds is running smoothly, an expert says.
MoneyWatch
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Feds have rejected 15% of businesses' tariff refund claims
But after some early hiccups, the U.S. government's hub for businesses seeking tariff refunds is running smoothly, an expert says.
FCC orders Disney to file for early license renewal after Kimmel clash
The regulatory agency issued the order after President Trump and first lady Melania Trump urged ABC to fire late-night host Jimmy Kimmel.
American Airlines tightens rules for portable chargers amid fire concerns
American Airlines is imposing new rules on portable chargers that passengers can bring on flights. Here's what to know.
Over half of Americans say their finances are worsening, Gallup finds
The impact of higher energy prices and fears about covering monthly bill is taking a toll on public sentiment, a new Gallup poll finds.
Gas prices jump to their highest level since start of Iran war
The average cost of a gallon of gasoline hit $4.18 on Tuesday, up $1.20 since the conflict in the Middle East started on Feb. 28.
Politics
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Judge tosses Trump admin. lawsuit seeking access to Arizona voter data
A federal judge on Tuesday dismissed a lawsuit from the Justice Department seeking information on Arizona voters, another defeat in the Trump administration's nationwide push for voter data.
Highlights from the CBS California Governor's Debate
Top gubernatorial candidates met onstage at the CBS California Governor's Debate on April 28. Here are the highlights.
Gunshot at dinner may have struck officer's phone in pocket of bulletproof vest
Officials investigating the shooting at the White House Correspondents' Dinner said they estimated the suspect was running at about 9 miles per hour when he sprinted through a checkpoint and discharged his shotgun.
Analysis: Dinner shooting brings reminders of past era of political violence
For historians, the 1960s and 1970s provide particularly eerie parallels to the present. Both eras were marked by bitter political divides and the unsettling feeling that America's social fabric was being ripped apart.
Exclusive
Trump administration mandates enhanced security checks for immigration applicants
The Trump administration is subjecting broad categories of immigrants applying for green cards and citizenship to enhanced FBI checks, and is pausing some cases while those changes are implemented, according to documents obtained by CBS News.
HealthWatch
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Beyond crisis lines: How broader suicide prevention helps people in need
A new approach to suicide prevention shifts the focus from stopping harm in moments of crisis to upstream policies that give people reasons to live.
Big companies position themselves for payday from $50B federal rural health fund
A $50 billion federal fund is supposed to modernize rural healthcare. But community clinics and advocates fear that the contractors administering the money for states will bite off a big chunk before it reaches patients.
A 13-year-old's kidney was failing. Then a stranger stepped in.
Tim Fitzpatrick, a father of a chronically ill child, saw the story of a boy in need of a new kidney and felt compelled to help.
Ben Sasse is on extended time. He credits "providence, prayer and a miracle drug."
The former U.S. senator from Nebraska opened up about his terminal diagnosis, his family and the state of American politics in a "Things That Matter" town hall.
Exclusive
Johnson & Johnson to launch on TrumpRx with 4 of its prescription drugs
Drug-making giant Johnson & Johnson will officially start marketing four of its medications on the Trump administration's TrumpRx website on Friday, CBS News exclusively learned.
World
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Senate Republicans block Democrats' attempt to force Cuba war powers vote
President Trump has warned that Cuba is "next" after he's launched military operations against Venezuela and Iran.
King Charles tells Congress that alliance is "more important today" than ever
Saying he felt the "weight of history" on his shoulders, King Charles became the first British monarch in 35 years to address Congress on Tuesday.
Only "special relationship" U.S. has is "probably Israel," U.K. ambassador said
Britain's ambassador, in February remarks reported by the Financial Times, also called the lack of fallout from the Jeffrey Epstein scandal in the U.S. "extraordinary."
16th century shipwreck found by naval vessel off coast of Sweden
The unidentified ship is believed to have been built in the late 1500s, which would make it older than Sweden's iconic 17th century warship "Vasa."
Tycoon's son offers home for "cocaine hippos" slated to be killed
Anant Ambani, the son of tycoon Mukesh Ambani, said he formally requested the Colombian government to stay a decision to kill the animals.
Entertainment
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Entertainment
FCC reviewing ABC licenses amid Kimmel feud
The Federal Communications Commission says it wants the Walt Disney Company to file for early license renewal for its television stations. The announcement comes one day after President Trump and the first lady called on ABC to fire late-night host Jimmy Kimmel. CBS News legal contributor Rebecca Roiphe joins with analysis.
FCC reviewing Disney licenses over DEI practices
One day after President Trump called on ABC to fire late-night host Jimmy Kimmel, the FCC said it will begin reviewing eight broadcasting licenses owned or managed by Disney due to the company's diversity policies. CBS News senior White House and political correspondent Ed O'Keefe has the latest.
Justin Hartley gives "Tracker" preview
"Tracker" star Justin Hartley reveals how he feels about the upcoming finale of the third season of the show. He also discusses his wife making appearances in the series and the best advice he's received in the industry.
Trumps call for Jimmy Kimmel to be fired
President Trump and first lady Melania Trump are demanding that late-night host Jimmy Kimmel be fired over remarks he made before the White House Correspondents' Dinner. Nancy Cordes reports.
Trump calls for Kimmel to be fired over jokes made before correspondents' dinner
First lady Melania Trump said that jokes Jimmy Kimmel made on his show days before the White House Correspondents' Dinner were "hateful and violent rhetoric."
Technology
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Technology
Elon Musk testifies in OpenAI trial
Opening statements began on Tuesday in Tesla CEO Elon Musk's lawsuit against OpenAI co-founder Sam Altman. Maxwell Zeff, senior writer at Wired, joins with more.
Jury selection begins in Musk-Altman legal battle
Jury selection began Monday in the legal battle between tech leaders Elon Musk and Sam Altman. CBS News senior business and technology correspondent Jo Ling Kent has the latest.
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.
How the AI-driven data center boom is leading to skyrocketing energy bills
A CBS News analysis found that Georgia Power, the largest energy provider in the state, imposed six rate hikes in the last three years.
How data centers are impacting Americans
This week, Maine's governor vetoed a bill that would have made the state the first to ban the construction of new data centers. Shanelle Kaul reports.
Science
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Trump administration fires board overseeing National Science Foundation
The Trump administration has fired all 22 current members of an independent board that oversees the National Science Foundation, one dismissed member says.
AI used to reveal face of victim fleeing Mount Vesuvius eruption
Archaeologists found the victim holding a terracotta mortar, which they interpret as an improvised attempt to shield his head.
In a first, endangered orangutan seen using canopy bridge to cross road
Rapid development has been shrinking the jungle habitat of the critically endangered species, and fatal conflicts with people have been increasing.
Saving the Venus fly trap
The carnivorous Venus fly trap is native to the Carolinas, but its population is dwindling due to loss of habitat. Correspondent Seth Doane talks with botanist Julie Moore, who has spent much of her life helping to save these remarkable plants; and with Damon Waitt, director of the North Carolina Botanical Garden, who discusses the unusual traits of a species that Charles Darwin called the most interesting plant in the world.
From 1990: NASA launches Hubble Telescope
On April 24, 1990, NASA launched the Hubble Space Telescope from the Space Shuttle Discovery after seven years of delays. Watch CBS News' coverage from that day.
Crime
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Crime
Correspondents' dinner suspect's devices probed
The man accused of trying to assassinate President Trump at the White House Correspondents' Dinner over the weekend is set to be back in court on Thursday. Nicole Sganga reports.
Forensic reviews underway in dinner shooting
The FBI is conducting forensic reviews of evidence recovered from the Hilton Hotel in Washington, D.C., following the White House Correspondents' Dinner shooting. CBS News' Anna Schecter has the latest.
U.S. soldier pleads not guilty to charges of gambling on Maduro raid
A U.S. soldier pleaded not guilty to charges that he used classified information about the mission to capture former Venezuelan leader Nicolás Maduro to win more than $400,000.
Details on FBI raid of Minnesota daycares
Federal agents exercised search warrants at about 20 daycare centers for suspected fraud Tuesday morning, multiple officials confirmed to CBS News.
Ex-NBA player Damon Jones first to plead guilty in pair of gambling cases
Federal prosecutors charged 34 defendants across two indictments, alleging sports betting and mafia-linked rigged poker games.
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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Latest CBS News Videos
Gen Z teens learning how to use ham radio
Kids today have countless ways to connect, but at one school in New York, they're going old school. Michael George introduces us to a group of teens learning about ham radio.
Charles gives Trump bell from the HMS Trump
King Charles on Tuesday night presented President Trump with what he said was the original bell from the HMS Trump before giving cheers to the ongoing relationship between the U.S. and England.
4/28: The Takeout with Major Garrett
Former FBI Director James Comey says he's innocent after second indictment; King Charles visits the White House and addresses Congress.
Woman dies on Carnival cruise ship
Federal officials are investigating the death of a woman who fell from the balcony of her state room on a Carnival Cruise Line ship. Kris Van Cleave reports.
Camp Mystic director tells parents he failed
In front of a state committee investigating last year's deadly Texas flash floods, Camp Mystic director Edward Eastland on Tuesday told parents of the victims he had failed them. Jason Allen reports.