Scientists agreed the rocky outcrops in a remote part of Quebec, Canada, were ancient. But were they really Earth’s oldest? New research suggests they are.

New testing now shows the rocks are 4.16 billion years old, formed during the Hadean eon, when Earth was just beginning to ...

Rocks older than 4.03 billion years could shed light on Earth's earliest geological history, but they're incredibly rare.

D has been used as a pesticide since the 1940s, and gained notoriety as a component of Agent Orange, used by U.S. forces in ...

Jared Wildenradt has hiked the Ice AgeTrail nine times. Lisa Siewert is mapping the geologic highlights of the path. They share favorite segments.

In 2008, researchers reported that these rocks dated back 4.3 billion years 2, a claim that other scientists contested. Work ...

The world’s oldest map of the night sky was amazingly accurate. Newly discovered fragments of 2,200-year-old star coordinates—once thought lost—reveal the incredible skill of the ancient ...

Scientists believe Michigan may be an abundant source of what could become the next big thing in carbon-free energy.

Nearly two dozen state geological surveys depend heavily on federal funds. A proposed budget cut could slow or stop key ...