Human-monkey chimera embryos created in labnewatlas.com152 points·by wellokthen·5 years ago·231 comments
Nuclear war is unlikely to cause human extinction?lesswrong.com161 points·by wellokthen·6 years ago·261 comments
Why are there 5280 feet in a mile? (2009)petersmagnusson.org23 points·by wellokthen·6 years ago·21 comments