South of India, the ocean surface slumps into one of Earth’s strangest depressions, a gravity hole so deep it has puzzled geophysicists for decades. Now a new reconstruction points to a buried plume ...

A hidden plume of hot mantle rock, originating from Africa, may explain a 75-year-old gravity mystery in the Indian Ocean. A deep, enigmatic dip in the Indian Ocean’s surface, known as the Indian ...

Scientists are working to solve a mystery of Earth’s molten outer core, which lies more than 2,000 kilometers beneath our feet ...

New research suggests Earth’s climate can swing wildly on surprisingly short timescales — even during hot, ice-free ...

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On a remote island in the Pacific, Will Smith descends into the heart of an active volcano to investigate sounds beyond human hearing. Will discovers that everything on our planet creates its own ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...

Chinese researcher says the files released by US government contain images and video but lack the hard data needed for ...

Hitting on a corner of the blade will cause unpredictable breaks and can damage the hammer. The blade of the hammer should make full contact with the stone, as in the photo on the far right. [3, ...