LifeMonkeys in Bali use stones as sex toys to fill their leisure time Male and female macaques in a Balinese sanctuary commonly use stone tools to masturbate, possibly because they have more leisure time than wild primates 51¶¯Âþ
LifeEar anatomy shows warm-blooded animals evolved 233 million years ago Analysis of inner ear canals from hundreds of modern and fossil animals shows that warm-bloodedness appeared abruptly in the late Triassic 51¶¯Âþ