WATCH: How did walking and breathing first evolve?
Friday, November 14, 2014 - 00:31
in Biology & Nature
It was one small step for an animal, but one giant leap for the animal kingdom, so exactly how did the first vertebrates walk onto land and take their first breath of air? RiAus's A Week in Science investigates the science behind our first step and explains why we almost ended up breathing out of our ears.