Dust cloud from dino-killing asteroid charbroiled the Earth

“We're in the realm where we might be essentially killing off everything within that first hour or two." https://arstechnica.com/science/2026/07/dust-cloud-from-dino-killing-asteroid-charbroiled-the-earth/?utm_brand=arstechnica&utm_social-type=owned&utm_source=mastodon&utm_medium=social