WASHINGTON — Exotic sea creatures called comb jellies may reshape how scientists view early evolution — as their genes suggest nature created more than one way to make a nervous system. These ...

In a study that compares the genomes of aquatic life forms, researchers have found evidence to shuffle the branches of the tree of life. For more than a century, scientists thought that complex cell ...

The theory of evolution shows that all life stems from a single root and that we are related, more or less distantly, to every other living thing on Earth. Our closest ancestors, as Charles Darwin ...

Every horror flick fan knows to never underestimate a blob. Now, scientists working with comb jellies have learned the same lesson. Within the transparent ooze of the gelatinous animal, researchers ...

Only two groups of animals do without a nervous system: sponges, which are simple animals attached to the sea bottom that do not show complex behaviours, and the placozoans, animals comprised of two ...