History In The Headlines

Category: Geology

Artist's rendering of massive iceberg drifting along the coast of southern Florida. (Credit: Alan Condron)

Massive Icebergs Once Reached Florida Coast

During the last ice age, they drifted thousands of miles south from Canada, researchers find.

Zircon crystal found in Jack Hills region of Australia (Credit: Jack Valley)

Scientists Confirm Crystal as Oldest Piece of Earth’s Crust

Researchers have confirmed that a tiny gem found in western Australia is the oldest known piece of Earth, dating back some 4.4 billion years.

Recreation of the Permian period (Credit: Getty Images)

Mass Extinction Occurred Much Faster Than Previously Thought

Some 252 million years ago, the planet’s largest mass extinction took place in only around 60,000 years — almost instantaneously, relative to geologic time.

Grand Canyon

How Old is the Grand Canyon? That Depends, Scientists Say

New research published this weekend provides the latest fodder for a long-standing debate over when the majestic Grand Canyon was actually formed.

iStockimages.com

Scientists Solve Supervolcano Mystery

A team of researchers has discovered more information about what causes “supervolcanoes” to erupt, and their findings are unsettling.

Upernavik, Greenland (Credit: Lee Corbett)

Scientists Discover Protective “Ghost Glaciers” in Greenland

A new study finds that so-called “ghost glaciers” – layers of non-erosive glacial ice – have protected Greenland’s ancient landscapes for more than 800,000 years.