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![A map of the world with gravity data showing the Indian Ocean geoid low in dark blue.](https://cdn.mos.cms.futurecdn.net/8dEapQv8PibAzdeJddsAkf-320-80.jpg)
Indian Ocean gravity hole: The dent in Earth's gravitational field created by the death of an ancient ocean
By Sascha Pare published
The Indian Ocean "gravity hole" is a region where Earth's mass is reduced, leading to weak gravitational pull, lower-than-average sea levels and a puzzle scientists have only just begun to solve.
![In February, wildfires fueled by severe drought consumed forests, grasslands and wetlands in northeastern Argentina, burning an estimated 40% of the Ibera National Park.](https://cdn.mos.cms.futurecdn.net/vhmsbVA9dueaN9rA8EN6UD-320-80.jpg)
'A harbinger of what's to come:' NASA satellites show massive drop in global freshwater levels
By Ben Turner published
NASA satellites discovered that Earth's surface has lost enough water to empty Lake Erie two and a half times since 2015. And the problem could be here to stay.
![True colour satellite image of the Earth showing Greenland, Europe and Northern Africa, with cloud coverage.](https://cdn.mos.cms.futurecdn.net/uDRpmVtnZSbiGB8maAnAMk-320-80.jpg)
This spot will be key to the inevitable collapse of a key Atlantic current
By Sascha Pare published
New modeling research reveals that the Atlantic Meridional Overturning Circulation (AMOC) is particularly vulnerable to shifts in the Irminger Sea from increasing Arctic meltwater.
![earth from space with europe and the arctic and northern africa in view](https://cdn.mos.cms.futurecdn.net/zAE7u6cxegxXL7sGCJuXHR-320-80.jpg)
Earth is racing toward climate conditions that collapsed key Atlantic currents before the last ice age, study finds
By Sascha Pare published
Global warming during the Last Interglacial period caused so much Arctic ice to melt that Atlantic currents collapsed — and scientists say these are the conditions we could be heading toward.
![Tsunami waves hitting the coast of Minamisoma in Fukushima prefecture.](https://cdn.mos.cms.futurecdn.net/nA5PcmeLPNoMNoReBJfAzJ-320-80.jpg)
What's the difference between a tsunami and a tidal wave?
By Richard Pallardy published
Tsunamis and tidal waves are the powerful types of wave on Earth, but very different processes are involved in their formation.
![A dramatic photo of a rain storm over the ocean with orange sunlight peeking through dark clouds](https://cdn.mos.cms.futurecdn.net/TBQ4S6ckBYQoajTZLcSc3M-320-80.jpg)
Rain helps the ocean trap more carbon
By Veronika Meduna, Eos.org published
Rain has so far been ignored in calculations of the ocean's capacity to take up carbon, but a new estimate shows it enhances the ocean sink by 5% to 7%.
![A visualization from space of the Gulf Stream as it unfurls across the North Atlantic Ocean.](https://cdn.mos.cms.futurecdn.net/oPxkgyqzwPTyKW97sEJUJJ-320-80.jpg)
'We don't really consider it low probability anymore': Collapse of key Atlantic current could have catastrophic impacts, says oceanographer Stefan Rahmstorf
By Ben Turner published
A visualization from space of the Gulf Stream as it unfurls across the North Atlantic Ocean.
![Iceland's Diamond Beach with black sand and chunks of ice that sparkle under the rising sun.](https://cdn.mos.cms.futurecdn.net/X8EKmw5mJCK2uP44rDEF4A-320-80.jpg)
Diamond Beach: Iceland's spellbinding black sand beach covered in sparkling ice jewels
By Sascha Pare published
Icebergs and other glacial fragments regularly wash up on Iceland's southern Diamond Beach, making the sandy strip look like a field of gemstones.
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