The Clovis-first model no longer holds up. Here's what fossil footprints, ancient tools, and DNA evidence now suggest about early human arrival in the Americas.
Some nutrients like magnesium, vitamin D, and B12 have real evidence behind their role in mood and anxiety — here's what the research actually shows.
Food coming back up after eating can stem from GERD, hiatal hernia, or rarer conditions like rumination syndrome. Learn what the patterns mean and when to see a doctor.
From solar to hydrogen to next-gen nuclear, here's a clear look at the technologies gradually stepping in to replace oil—and where the real challenges lie.
Vacuum decay is a theoretical physics concept where the universe could shift to a lower energy state, rewriting the laws of physics. Here's what we know.