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Hells Canyon caves reveal unexpected finding about America's deepest gorge
About 2,000 feet deeper than the Grand Canyon, Hells Canyon was rapidly carved when a lake spilled over about 2.1 million years ago, new research estimates.
Taal Lake: The volcanic crater that has 'an island within a lake, within an island within a lake, within an island'
Taal Lake on Luzon Island in the Philippines is a volcanic crater lake with a rare geology of nested islands and water.
Industrial waste is turning into a new type of rock at 'unprecedented' speed, new study finds
Samples from slag cliffs in England reveal industrial waste products can turn into rock in less than four decades, challenging assumptions about how rocks form.
How much gold is there in the world?
How much gold have humans mined to date, and how much is left?
Tectonic plates can spread subduction like a contagion — jumping from one oceanic plate to another
Evidence from Earth's deep past suggests dramatic subduction zones can spread like a contagion.
Scientists discover strong, unexpected link between Earth's magnetic field and oxygen levels
Earth's magnetic field and oxygen levels have increased more or less in parallel over the past 540 million years, suggesting the two factors are linked in some way, researchers say.
Lake Natron: The caustic, blood-red lake in Tanzania that turns animals to 'stone'
Lake Natron is a soda lake in northern Tanzania with a volcanic geology that maintains the water's pH around 10.5, which is almost as caustic as ammonia. Some life-forms thrive there nevertheless.
The mysterious hill in Sudan that looks like 'landlocked lips'
Earth from space A 2012 Google Earth photo captured a hill formation in Sudan that bears a striking resemblance to human lips. Not much is known about the unusual landmark, but researchers have guessed how it formed.
