Articles by

Carolyn Gramling

20 years after Hurricane Katrina, is the U.S. better prepared? 

In late August 2005, Hurricane Katrina devastated the U.S. Gulf Coast. The storm cut a deadly swath...

A Midwest ‘megaflash’ is the longest lightning on record

A massive bolt of lightning that lit up the sky from Dallas to Kansas City, Mo., in...

What to know about the extreme U.S. flooding — and ways to stay safe

July has washed across the United States with unusually destructive, deadly torrents of rain. In the...

How an ancient marine predator snuck up on its prey

A past predator of the seas may have had a secret weapon: noise-cancelling flippers that helped it...

Deep-sea mining could start soon — before we understand its risks

An underwater gold rush may be on the horizon — or rather, a rush to mine the...

Earth’s oldest rocks may be at least 4.16 billion years old

A remote outcrop in Canada harbors rocks that are at least 4.16 billion years old, researchers report...

Sloths once came in a dizzying array of sizes. Here’s why

The sloth family tree once sported a dizzying array of branches, body sizes and lifestyles, from small...

This exquisite Archaeopteryx fossil reveals how flight took off in birds

An exceptionally preserved specimen of the ancient bird Archaeopteryx offers the most detailed window yet into the...