LifeTool-wielding monkeys push local shellfish to edge of extinction Long-tailed macaques on an island in Thailand are doing such a good job of cracking shellfish with stone tools, they are driving down their prey's numbers and body size 51¶¯Âþ
HumansIt only takes a few gene tweaks to make a human voice Our capacity for complex speech might come from tiny tweaks to existing monkey genes that gave us flatter faces and more refined larynxes 51¶¯Âþ