Alien Invaders, India Rethinks Nuclear Energy Plan, Language Evolution

Two new studies highlight characteristics that may help alien plants and animals become invasive. India rethinks its nuclear energy ambitions. A new study shows what we might have known all along-human language originated in Africa. Yet another study suggests that rules of grammar are far from universal. My colleague Patrick Cox, the host of The World's language podcast (The World in Words) gives us some perspective on the new findings on language evolution.