Paul Heinrich, retired associate researcher with the Louisiana Geological Survey at LSU, discovered citronelle formations in the fractures in the clayey, or clay-like, sands exposed in the ditch ...

New geological evidence unearthed in the US suggests that a catastrophic cosmic event may have wiped out a once-thriving culture more than 12,800 years ago. Researchers analyzing sediment samples in ...

An impact crater, believed to be associated with the “Great Dying,” the largest extinction event in the history of life on Earth — much earlier than the extinction of the dinosaurs — appears to be ...

(Santa Barbara, Calif.) — Researchers continue to expand the case for the Younger Dryas Impact hypothesis. The idea proposes that a fragmented comet smashed into the Earth’s atmosphere 12,800 years ...

Carbon-containing meteorites look like they had less severe impacts than those without carbon because the evidence was blasted into space by gases produced during the impact. The discovery not only ...

Russell has a PhD in the history of medicine, violence, and colonialism. His research has explored topics including ethics, science governance, and medical involvement in violent contexts. Russell has ...