Global Warming

Orange elephant ear sponge, in the Gulf of Mexico.

Ocean Sponge Skeletons Suggest a More Significant History of Global Warming Than Originally Thought

Analysis of the sea creatures’ skeletal chemistry suggests the world’s temperatures have increased by 1.7 degrees Celsius since pre-industrial times

An entire neighborhood in Tacloban, Leyte, Philippines, destroyed by Typhoon Haiyan in 2013. More than 6,500 people died during the storm, which had maximum sustained winds of 195 miles per hour. Winds of those speeds would be above the threshold for a hypothetical Category 6 for tropical cyclones proposed by researchers.

Do We Need a Category 6 Designation for Hurricanes?

Global warming is leading to more intense storms well above the threshold for Category 5 hurricanes, scientists write in a new paper

During the Little Ice Age, which spanned roughly 1250 to 1860, average global temperatures dropped by as much as 3.6 degrees Fahrenheit.

These Paintings Reveal How the Dutch Adapted to Extreme Weather During the Little Ice Age

Artists like Pieter Bruegel the Elder and Hendrick Avercamp documented locals' resilience in the face of freezing winters and food shortages

The 2023 Doomsday Clock on display before a Bulletin of the Atomic Scientists event on January 24, 2023. The Bulletin has been setting the clock since 1947 based on analysis of threats facing humans from technologies people have made. 

Doomsday Clock Stays at 90 Seconds to Midnight Amid Climate Change, War and A.I.

For the second year in a row, the clock is the nearest it has ever been to signaling our total annihilation

Bottom trawling is a polarizing fishing practice that involves dragging heavy nets and equipment across the seafloor.

Seabed Trawling May Be Spewing Huge Amounts of CO2 Into the Atmosphere

New research suggests the controversial fishing method is also contributing to increased ocean acidification, which can harm marine wildlife

Researchers studied roughly 50 numbats over the course of a year.

As the Planet Warms, Australia's Numbats Are at Risk of Overheating

The endangered, squirrel-sized marsupials forage for termites during the day—but they can become too hot after just ten minutes in direct sunlight, according to new research

In the extreme heat of summer 2023, saguaro cactuses died in Arizona.

2023 Broke Temperature Records. Will 2024 Be Even More Extreme?

Climate scientists have confirmed that last year's heat was unprecedented, surpassing records by a wide margin—but it could be one of the coolest years to come

Lake Michigan, pictured here in December 2022, had 0.1 percent ice cover on Jan. 1, 2024.

The Great Lakes Reached a Record Low for Ice Cover on New Year's Day

The 'extreme' lack of ice follows warm temperatures in December and calls attention to recent downward trends in ice coverage on the lakes

Turquet’s octopus

Octopus DNA Reveals Clues to When the West Antarctic Ice Sheet Last Collapsed

Understanding the ice sheet's past could help researchers shed light on its future melting

Keālia Pond National Wildlife Refuge

Could Climate Change Cause More Lakes to Turn Bright Pink?

While rosy-hued waters exist naturally around the world, a pond in Hawaii recently turned pink, and Australian scientists say the same could happen there

COP28 president Sultan Ahmed Al Jaber and others applaud after nations adopted the first climate deal calling for a transition away from fossil fuels. A lead negotiator for 39 small island nations noted that the group was not in the room when the final agreement was reached.

Nations Agree to 'Transition Away From Fossil Fuels' in Landmark Climate Deal

The agreement, which ended the COP28 climate conference, is not legally binding, but it's the first to explicitly call for moving away from fossil fuels

A wildfire in British Columbia, Canada, this summer. Global warming increases the likelihood of extreme events like wildfires.

2023 Will Officially Be the Hottest Year on Record, Scientists Say

A new report finds the global average temperature so far this year is 1.46 degrees Celsius warmer than the pre-industrial average

A stall worker carries a bag of ice on Copacabana Beach during a heatwave in Rio de Janeiro, Brazil, on November 18, 2023.

Earth Headed for Nearly Three-Degree Temperature Hike—Well Above Paris Agreement Level

A new U.N. report finds current pledges put the planet on track to warm 2.5 to 2.9 degrees Celsius above pre-industrial levels this century

Green sea turtles are struggling because of climate change, habitat destruction, erosion and other threats.

Metal Pollution May Be Making More Green Sea Turtles Female

In addition to warming temperatures, new research finds contaminants might contribute to the endangered reptiles' skewed sex ratios

By 2030, coal production is projected to rise to 460 percent above what’s consistent with limiting warming to 1.5 degrees Celsius.

Fossil Fuel Production on Track to Increase Despite Climate Promises, Report Finds

World governments are planning to produce 110 percent more coal, oil and gas in 2030 than is allowed under the Paris Agreement, U.N. says

Wildfires have smashed records this year in Canada, scorching more than 40 million acres in the country.

Earth Is Entering 'Uncharted Territory' Because of Climate Change, New Report Warns

Researchers found that 20 of 35 "planetary vital signs" are at record extremes, and they call for rapid action

Atlantic salmon spend most of their lives in the cool waters of the ocean. When they venture upstream in freshwater rivers to spawn, however, they encounter challenging warmer waters.

Engineers Create 'Air Conditioning' for Salmon With Chilled Patches of River Water

Wild Atlantic salmon can struggle with heat as they swim upstream to spawn—but artificial "thermal refuges" may help them cool off

Hurricane Otis caused major damage in Acapulco, Mexico.

Hurricane Otis Slams Mexico in 'Nightmare Scenario' That Shocked Meteorologists

The storm rapidly intensified in just 24 hours before it hit Acapulco as a category 5, killing at least 27 people and destroying infrastructure

A chum salmon in Alaska's Katmai National Park and Preserve. Salmon numbers are declining in some places due in part to climate change.

Climate Change Is Pushing Salmon North in Alaska, Scientists Say

Researchers recently found about 100 chum salmon spawning in the Arctic, suggesting the species is shifting to new habitats

Ice shelves are important because they help keep ice on land from flowing into the ocean as quickly.

Rapid Melting of West Antarctic Ice Shelves Is 'Unavoidable,' Study Finds

Even under a best-case climate scenario, global sea levels will likely rise because of this accelerated melting, scientists say

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