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Enormous freshwater reservoir discovered off the East Coast may be 20,000 years old and big enough to supply NYC for 800 yearsAn expedition off the coast of Massachusetts has confirmed the existence of a freshwater reservoir beneath the seafloor. Now, scientists are starting to understand when and how it formed.
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Giant underwater plumes triggered by 7-story waves at Nazaré captured off Portuguese coastEarth from space A 2020 satellite photo shows the immense power of 7-story waves crashing along the Portuguese coast. Later the same day, a surfer rode a 101-foot-tall wave at Nazaré, setting a new world record.
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Last year, the oceans absorbed a record-breaking amount of heat — equivalent to 12 Hiroshima bombs exploding every secondIn 2025, the ocean absorbed an extra 23 zettajoules of heat energy in 2025, breaking the ocean heat content record for the ninth consecutive year.
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18 of Earth's biggest river deltas — including the Nile and Amazon — are sinking faster than global sea levels are risingWorldwide, millions of people live in river deltas that are sinking faster than sea levels are rising, research suggests. This exacerbates the risk of catastrophic coastal flooding and land loss.
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What's the oldest river in the world?The oldest river predates the dinosaurs. But how do we know this?
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Submerged sandbanks shine like underwater auroras in astronaut's view of the BahamasEarth from space A 2016 astronaut photo of the Bahamas shows a series of luminous, rippling sandbanks partly carved out by a coral reef. The image also reveals subtle differences in the ocean's surface caused by a steep, hidden ocean drop-off.
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See the exact point where a glacier, a lake and a river 'touch' in ArgentinaEarth from space A 2021 astronaut photo shows a triple valley system in Argentina's Los Glaciares National Park where a massive climate-resilient glacier, a pristine turquoise lake and a murky green "river" come together at a single point.
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Rare 'sunglint' transforms Alabama River into a giant 'golden dragon'Earth from space A 2023 astronaut photo shows the moment the Alabama River briefly morphed into an undulating golden serpent, similar in shape to a Chinese dragon. This temporary transformation was the result of a rare mirror-like phenomenon known as a "sunglint."
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Collapse of key Atlantic current could bring extreme drought to Europe for hundreds of years, study findsScientists modeled Europe's future if a key Atlantic current were to collapse and found that the continent faces a much drier future.
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