Peak tornado activity typically occurs in the region from early May to early July. It has moved an average of seven days earlier over the past six decades.
Major Hurricane Odile struck the Baja Peninsula and left extensive damage and flooding across the area. Photos of the damage and firsthand reports, here.
The Montreal Protocol put the brakes on ozone-depleting chemicals 30 years ago. But one compound is still abundant in Earth’s atmosphere. Where's it coming from?
Tool marks within the engraving suggest that it was likely created by someone who intentionally passed a sharp object again and again over the cave wall.