ASTRONOMY: Did a Supernova Trigger a Mass Extinction on Earth?
A global extinction event around 359 million years ago may have been triggered by the death blast of a distant star, a new study suggests. Toward the end of the … Read more
A global extinction event around 359 million years ago may have been triggered by the death blast of a distant star, a new study suggests. Toward the end of the … Read more
Deep within Guatemala’s rainforest sits one of the most famous remnants of the Maya civilization: a roughly 2,000-year-old citadel turned to ruins called Tikal. When Alan Weisman hiked through the … Read more
The scene opens on a sparse, gray landscape, a gnarled tree in the foreground, bits of ash slowly drifting down from the sky. On the horizon, a few huddled figures … Read more
The end of the Permian period, around 252 million years ago, was a dire time for life on Earth. Scientists believe a series of violent volcanic eruptions occurred in what … Read more
Humans are woefully unprepared for a surprise asteroid or comet, a Nasa scientist warned on Monday, at a presentation with nuclear scientists into how humans might deflect cosmic dangers hurtling … Read more