Scientists Discovered the Origin of Human Ears in the Skull of an Ancient Creature

While Thrinaxodon liorhinus didn’t yet have the sophisticated hearing equipment of modern mammals, it shows that eardrums ...
Nature

What were the first animals? The fierce sponge–jelly battle that just won’t end

For almost two decades, scientists have debated whether sponges or comb jellies are the first animal lineage. Now some are ...