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:Photos From the 2019 Solar Eclipse in Chile and ArgentinaNASA asteroid shock: Space rock hurtling towards Earth spotted by planetary defenceDuring a Solar Eclipse, What Are Plants Doing?Moon landing bombshell: Neil Armstrong’s shocking ‘mistake’ revealed in lost recordsSpace weather forecast: Solar storm to SMASH into Earth on FridayRemembering Apollo 11: What to Watch and Listen To