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Sunday, July 12, 2020
Chicxulub collision put Earth’s crust in hot water for over a million years

Chicxulub collision put Earth’s crust in hot water for over a...

The asteroid that slammed into Earth 66 million years ago left behind more than a legacy of mass destruction. That impact also sent superheated seawater swirling through the crust below for more than a million years, chemically overhauling the rocks. Similar transformative hydrothermal systems, left in the wake of powerful impacts much earlier in Earth’s…
Up to 220 million people globally may be at risk of arsenic-contaminated water

Up to 220 million people globally may be at risk of...

As many as 220 million people around the world may be at risk of drinking arsenic-contaminated groundwater, a new study finds. Combining climate, environmental and geologic data with machine learning, researchers made a global map, described in the May 22 Science, that predicts where groundwater arsenic concentrations are likeliest to exceed 10 micrograms per liter,…
See what Earth looks like from 5 million miles away in space

See what Earth looks like from 5 million miles away in...

Look to the center to spot Earth getting smaller and smaller. ESA/BepiColombo/MTM In April, Earth waved farewell to the BepiColombo spacecraft as it flew by on its way to Mercury. BepiColombo snapped some gorgeous images of our planet during the process, and it then kept its eyes on home for as long as it could. On…
Long-dormant volcano Mauna Kea has been quietly grumbling for decades

Long-dormant volcano Mauna Kea has been quietly grumbling for decades

Hawaii’s long-dormant Mauna Kea volcano has been quietly and regularly rumbling for decades — but there’s no need for alarm. The tiny earthquakes aren’t signs of the volcano’s unrest, and are more likely linked to gases bubbling from a pool of slowly cooling magma deep underground, researchers report in the May 15 Science. Since at…
Deadly temperatures expected to arrive later this century are already here

Deadly temperatures expected to arrive later this century are already here

Human beings have a superpower — sweating. When temperatures rise, beads of sweat exude from our pores and evaporate, releasing energy that cools the skin and keeps our bodies from overheating. This self-cooling mechanism has helped humans spread to every hot and humid corner of the globe. But that sweating superpower has a theoretical upper…
Greenland and Antarctica are gaining ice inland, but still losing it overall

Greenland and Antarctica are gaining ice inland, but still losing it...

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In the tug-of-war between coastal melting and inland ice buildup, the meltdown is winning in both Greenland and Antarctica. Initial observations from NASA’s ICESat-2 satellite in 2018 and 2019 reveal how the Greenland and Antarctic ice sheets have changed since the original ICESat mission collected data from 2003 to 2008. Both missions measured the height…
See NASA Earth Observatory’s gorgeous best image from 20 years of views

See NASA Earth Observatory’s gorgeous best image from 20 years of...

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This false-color satellite view is called "Ocean Sands, Bahamas." Serge Andrefouet/University of South Florida It was a tight race, but voters have chosen the all time best image out of 20 years of stunners from NASA's Earth Observatory, a website dedicated to sharing science stories about Earth. The winner is "Ocean Sands, Bahamas," a blue-green…
Earth Is Wilder & Cleaner As People Stay Home – Before & After Images

Earth Is Wilder & Cleaner As People Stay Home – Before...

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Delhi's India Gate before and after Coronavirus lockdown. Getty Images As much of the world continues to stay at home to slow the spread of coronavirus, Earth has quickly transformed into a wilder and cleaner place. There are numerous examples where iconic monuments, typically shrouded in smog are now clearly visible as pollution clears. The…
Did heavy rain trigger Kilauea’s eruption? It’s complicated

Did heavy rain trigger Kilauea’s eruption? It’s complicated

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When it rains heavily in Hawaii, lava pours from the volcano Kilauea, according to a new study facing strong scrutiny by some volcanologists. Starting in May 2018, the volcano dramatically ramped up its 35-year-long eruption, opening 24 new fissures and shooting fountains of lava 80 meters into the air. Within three months, the volcano had…
Earth Day 2020: ‘We desperately need hope now,’ Jane Goodall says

Earth Day 2020: ‘We desperately need hope now,’ Jane Goodall says

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Jane Goodall is known for her work with primates, but she's also an avid animal rights and environmental activist. National Geographic Jane Goodall has a lot to say about how human disregard for animals and the environment brought on the coronavirus pandemic. But the famed British primatologist believes there's still a chance we can repair…

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