This 375-million-year-old fish, the closest known relative of the ancestors of limbed animals such as humans, likely evolved the foundation for rear legs even before the move to land, researchers say.
During a conversation at a holiday party, it’s fun to be the person who tosses something weird into the mix. Such tidbits can cause everything from wonderment to winces.
Some animals, such as the starlet sea anemone, can regenerate large parts of their body, even after major injuries. Researchers have shown this regeneration response involves cells and molecules in ...