Monster galaxies lose their appetite with age

Our universe is filled with gobs of galaxies, bound together by gravity into larger families called clusters. Lying at the heart of most clusters is a monster galaxy thought to grow in size by merging with neighboring galaxies, a process astronomers call galactic cannibalism.

Team creates multicellular life in the lab

Biologists have persuaded a single-celled organism, brewer's yeast, to evolve into a multicellular cluster, mimicking one of the first stages of evolution on Earth.