There is strong scientific consensus surrounding this story and it is informed by multiple converging lines of evidence.
A dolphin breaking the surface for air can seem like a reminder of its mammalian past. But evolution is not nostalgia. The same body that still needs oxygen from the atmosphere is also one of the ...
The water-to-land transition stands as one of the most significant events in vertebrate evolution, giving rise to the two major groups of living land vertebrates—amniotes and lissamphibians—which ...