Why Are Whales So Dang Big? Science May Finally Have an Answer
Baleen whales probably only grew colossal some 3 million years ago, and it was probably climate change that triggered the transformation.
Today one group of researchers offers a fascinating theory in Proceedings of the Royal Society B: Fusing the fossil record and phylogenetic work (that is, determining the relatedness of species to one another), they found that baleen whales probably got colossal just 3 million years ago—a sliver of time in the grand evolutionary scheme of things—and climate change probably triggered the transformation. That, of course, carries troubling implications for how the giants might fare as Earth’s oceans warm and acidify…