Herakles fights the Hydra (Athenian red-figure vase, ca. 475 BC, Palermo, Sicily) Another labor for Herakles King Eurystheus then told Herakles he had to go kill the Hydra for another one of [...]
Hydra evolution: a hydra budding new hydras Before the hydra For almost three billion years, the only living things on earth were one-celled creatures, either prokaryotes or eukaryotes. What's a prokaryote? And [...]
Reproduction: Hydra budding new hydras RNA and DNA molecules The first form of reproduction began about four billion years ago, when first RNA molecules and then DNA molecules began to make [...]
