Astronomers have discovered a flattened structure of matter around the Milky Way that explains the unusual motion of nearby galaxies.

Every multicellular organism, from tiny worms to humans, elephants, and whales, needs a way for their cells to connect with each other to form tissues, organs, and organize their overall body plan.

Scientists link humidity, microbes, and melanin to a pattern where animals in warm, wet climates develop darker feathers and fur.