The same 40 million people up and down the Colorado River are lining up for an ever-shrinking supply of water.

Several viral right-wing homesteading and farming influencers are pushing anti-immigrant conspiracy theories and demonizing migrants to their hundreds of thousands of followers across social media.

Paleoclimate and archaeological evidence tells us that, 11,000-5,000 years ago, the Earth's slow orbital 'wobble' transformed today's Sahara desert to a land covered with vegetation and lakes. Aa Aa ...