A researcher claims to have found evidence of humans in Chesapeake Bay over 22,000 years ago. The assertion is yet another ...
These human ancestors lived during the Ice Age over 20,000 years ago. What do we know about them? The 'Solutreans' were an ancient people who lived in what is today Spain, Portugal and southern ...
During the past billion years, the Earth's climate has fluctuated between warm periods - sometimes even completely ice-free - and cold periods, when glaciers scoured the continents. The cold ...
Earth may have been exposed to interstellar clouds which may have changed the chemistry of the planet's atmosphere and led to the development of multiple ice ages, researchers suggest ...
Scientists believe Earth may have briefly lost protection from the sun around two million years ago, left to endure the extreme environment of interstellar space as the solar system passed through a ...