Quirks & Quarks

June 30, 2018 - A comet from the stars, microbiome and arthritis, polar bear treadmill and more

Also decompressing fish, finding past civilizations and how much sleep do animals need?
A newly discovered species of reef fish from the genus Tosonoides that rode the decompression chamber to the surface. Its vivid colours would be invisible in the twilight zone. (Luiz Rocha © California Academy of Sciences)