Articles by

Carolyn Gramling

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...

Losing a key U.S. climate report would hurt future disaster prep

This year may already be on track to be the second hottest on record, after 2024....

Wetland bacteria could make more methane in a warming world

Warming temperatures may cause methane emissions from wetlands to rise — by helping methane-producing bacteria thrive. Higher...

Earth’s landmasses lost trillions of tons of water this century

Earth’s landmasses are holding onto a lot less water than they used to — and this loss...

Could Spinosaurus swim? The fierce dinosaur ignites debate

Scene: A small patrol boat cruises through the water, just offshore of an island somewhere in the...

Scotland’s Isle of Skye was once a dinosaur promenade

Scotland’s remote Isle of Skye was once a bustling dinosaur thoroughfare. A newly discovered set of at...