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Heat

A blue morpho butterfly, native to the tropical forests of Central and South America

Most Insect Species Call the Tropics Home. But Climate Change Is Pushing Many of the Critters There to Their Heat Limits

Insects in the lowlands will have an especially hard time with rising temperatures, a new study suggests

More than 200 river dolphins died in Brazil's Lake Tefé in the fall of 2023, with water temperatures soaring as high as 105.8 degrees Fahrenheit, according to a new study.

Water Temperatures in Amazon Lakes Reached Hot Tub Levels in 2023, Killing Fish and Dolphins

Brazil’s Lake Tefé reached 105.8 degrees Fahrenheit during the severe drought and heat wave

A company called Roofscapes has installed an experimental green roof over a zinc one at the Academy of Climate in Paris. A wooden platform, dotted with planters, runs along the building’s side, creating a terrace.

The Skyline of Paris Is Filled With Zinc Rooftops. But Can They Survive Climate Change?

Innovations are overdue, as the signature blue-gray metal roofs heat up in high temperatures, making living conditions in the apartments beneath them unbearable

Isaque Carvalho Borges won $12,500 in the Central and South American category of the 2025 Earth Prize, the world’s largest environmental sustainability competition for students between 13 and 19 years of age.

This 16-Year-Old Invented an A.I. Tool to Help Cool Down the World’s Hottest Cities

Isaque Carvalho Borges experiences the urban heat island effect in his home of Palmas, Brazil, and he wants to do something about it

Researchers used a laser to superheat a sample of gold past its theoretical limit and directly measured its temperature.

Physicists Superheated Gold to Hotter Than the Sun’s Surface and Disproved a 40-Year-Old Idea

A thin piece of gold reached 33,740 degrees Fahrenheit, which is more than 14 times higher than its melting point, by being rapidly heated—and it didn’t melt

Clownfish seem to become shorter during heat waves, according to the new study.

Clownfish Shrink Down Their Bodies to Survive Ocean Heat Waves, New Study Suggests

The adaptation appears to help the fish cope with high temperatures, since individuals and breeding pairs that shrank improved their survival odds

New research is revealing how climate change is impacting our eyes.

Climate Change Is Threatening Eye Health in Disturbing Ways

Cataracts, pinkeye and other ocular disorders are linked to heat, air pollution and higher UV exposure

In the early morning hours in Hanoi, people walk and jog around Hoan Kiem Lake's one-mile loop, while others partake in activities like traditional Vietnamese fan dancing, tai chi and even tango lessons.

To Truly Experience These Five Cities, Wake Before Sunrise

Everyone focuses on a destination’s nightlife, but perhaps we should be more concerned with what its early morning hours have to offer

Researchers studied the impact of extreme heat on older adults' "epigenetic clocks," which measure aging-related changes to DNA.

Extreme Heat Could Make Older Adults Age Faster by Altering Their DNA, Study Finds

Researchers compared genetic markers of aging to daily temperature records in areas across the United States and found that elderly people exposed to more hot days showed more rapid biological aging

An illustration of the Antarctic Circumpolar Current, with branches connecting to other ocean currents

Earth’s Strongest Ocean Current Could Slow 20 Percent by 2050 Because of Climate Change, Study Finds

The Antarctic Circumpolar Current is involved in everything from storing carbon to guarding Antarctica from invasive marine species, and a slower current could have far-reaching consequences

An illustration of the Parker Solar Probe approaching the sun

A NASA Spacecraft Will ‘Touch’ the Sun on Christmas Eve, Flying Closer to the Star Than Any Probe Before

The Parker Solar Probe will endure scorching temperatures of 1,700 degrees Fahrenheit as it performs the closest solar flyby of any human-made object in history

Researchers found that in 2023, a decrease in low-altitude clouds, specifically over the Atlantic Ocean, drove an increase in the planet's temperature.

Scientists Find Another Reason Why 2023 Was So Hot: a Decline in Low-Lying Clouds

According to new research, Earth might have reflected less solar radiation last year than in any other year since 1940, a trend that adds to the planet’s warming

The sun sets over Death Valley, California, on July 7, 2024, a day when its temperature reached 129 degrees Fahrenheit.

Climate Scientists Project 2024 Will Be the Hottest Year on Record—and the First to Pass 1.5 Degrees Celsius of Warming

After November 2024 was the second warmest November in the books, experts say the year is “effectively certain” to break the heat record set by 2023

A view of a snow-covered Mount Fuji from Fujiyoshida in Japan.

Japan’s Mount Fuji Has Now Remained Snowless for the Longest Time in Its 130-Year Record

After a summer that tied for the country’s hottest, meteorologists say an unusually warm autumn is delaying snowfall

This fossil palm leaf (Sabalites sp.) found in Alaska can be seen in the Smithsonian’s National Museum of Natural History. Sixty million years ago, dense, wet forests covered North America, and many plants, including palms, grew in places such as Alaska where temperatures are too frigid for them today. A new study published in Science gives scientists a picture of when the Earth was warm and when it was cool over the past 485 million years.

In a Landmark Study, Scientists Discover Just How Much Earth’s Temperature Has Changed Over Nearly 500 Million Years

Researchers show the average surface temperature on our planet has shifted between 51.8 to 96.8 degrees Fahrenheit

Phoenix, Arizona, has experienced a record 100 days in a row over 100 degrees Fahrenheit as of Tuesday. Forecasters say no relief is in sight.

Phoenix Shatters Heat Record With 100 Consecutive Days Above 100 Degrees

Forecasts show no relief from the extreme heat over the next few weeks, which promises to extend the streak far beyond the previous high of 76 days set in 1993

So-called “corn sweat,” the water vapor released by the process of evapotranspiration, can raise humidity in corn-producing areas on the hottest days of summer.

Trending Today

Feeling Sticky This Summer? ‘Corn Sweat’ Could Be Raising the Humidity

The natural process of plant evapotranspiration is pumping moisture into an already hot and humid atmosphere, especially in the corn-growing areas of the Midwest

Kids cool down at an animal-themed splash pad at Zoo Miami. Mist stations also help visitors avoid overheating on sweltering days.

Our Sustainable Future

In Miami, the Nation’s First Chief Heat Officer Charts a Course for Surviving on a Warming Planet

By building a broad coalition of partners across the political spectrum, the Florida metropolis is doing all that it can to keep the city cool

Firefighters in Jefferson County, Colorado, are encountering prairie rattlesnakes as they battle the Quarry Fire southwest of Denver.

‘We Have a Rattlesnake Problem’: Wildland Firefighters in the West Must Also Face a Slithering, Venomous Foe

Nearly 100 large fires are burning in the United States right now, including some in rattlesnake territory

A cyclist in Uttenweiler, Germany, rides toward the rising sun on July 21, 2024, which briefly held the title of the hottest day on record, until it was broken again one day later.

Earth Reached Its Hottest Day on Record Twice in a Row This Week

The global average surface temperature soared to 17.15 degrees Celsius on Monday, or 62.87 degrees Fahrenheit, breaking a short-lived record set on Sunday

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