SCIENCE Jellies or sponges? No, not the kitchen items—the animals. Maybe you haven’t been debating that last issue for decades, but evolutionary biologists have. Now one group says they’ve got an answer: It’s the jellies. For now. (Popular Science) Where are the jellies on the Tree of Life? Where are the sponges? Discussion Ideas A new study supports the placement of ctenophores, or comb jellies, … Continue reading Suck It, Sponges. Jellies Were the First Animals to Evolve.
SCIENCE Scientists have released a new version of the tree of life, showing everything we know about how the 2.3 million living things of Earth are related to one another. (Washington Post) Learn what criteria scientists use to classify organisms with our activity. Teachers, scroll down for a quick list of key resources in our Teachers’ Toolkit—and check out the bolded items for some great … Continue reading Circle of Life