LifeOxygen may have helped complex life arise a billion years early Earth’s air suddenly got a lot more oxygen around 1.6 billion years ago and that could have triggered the evolution of large multicellular organisms ¿ìè¶ÌÊÓÆµ
LifeVirtuoso bowhead whales constantly make up new songs Bowhead whales are such talented singers they can make two sounds simultaneously, and they invent new songs every year ¿ìè¶ÌÊÓÆµ