The NASA satellite image shows rust-red rock formations in Wyoming—evidence of 220-million-year-old 'megamonsoons'.

Three consecutive years of drought contributed to the "Barbarian Conspiracy," a pivotal moment in the history of Roman ...

Stone Age humans used a form of "prehistoric sunscreen" more than 40,000 years ago that may have helped them survive whilst Neanderthals died out, according to a new study. Scientists from the ...