Trilobites: Living Another Day, Thanks to Grandparents Who Couldn’t Sleep Age-related changes in sleep patterns may have helped early humans survive by ensuring at least one person was always alert to nighttime threats. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:‘Mundos Alternos,’ Where Other Worlds Come to LifeNASA Moon landing: Why did the Apollo 11 flag wave and flap in space?Buzz Aldrin's heartbreaking Neil Armstrong admission about 50th anniversary revealedNASA Curiosity rover: Space agency locates tiny Mars rover dwarfed by giant mountainIndia’s Going to the Moon, and the Country Is PumpedDriverless Cars Are Taking Longer Than We Expected. Here’s Why.
