The Early Toarcian Oceanic Anoxic Event, occurring approximately 183 million years ago during the Early Jurassic, marks a period of profound marine deoxygenation and widespread organic matter burial.

Researchers analyzed radioisotopes in layers of fossilized volcanic ash. Decay of uranium to lead within tiny crystals enabled scientists to precisely pinpoint dates for certain events. They ...

The Early Aptian was a period of profound environmental reorganisation, marked by recurrent episodes of oceanic anoxia that disrupted global biogeochemical cycles. These Oceanic Anoxic Events (OAEs) ...

A series of severe environmental crises in the oceans, spanning 185 to 85 million years ago, significantly altered the course of evolution on Earth. This "tag-team" between the oceans and continents ...

Scientists have revealed how a “tag-team” between the oceans and continents millions of years ago devastated marine life – and altered the course of evolution on Earth. Their study has unearthed a new ...

Ars Technica has been separating the signal from the noise for over 25 years. With our unique combination of technical savvy and wide-ranging interest in the technological arts and sciences, Ars is ...

Northwestern University Ph.D. student, Luca Podrecca takes a break from research in the field near Mount Ashibetsu in Japan. By studying prehistoric rocks and fossils emerging from the side of Mount ...