Jellyfish exhibit signs of a sleep state, which could mean that sleep predates the evolutionary development of central nervous systems.
Evolutionary differences blamed for squeezing out female researchers
Under certain circumstances squirrels will bury all of the same kind of nut near one another, a mnemonic strategy known as chunking.
The Nobel Prize in Physiology or Medicine was awarded today to Jeffrey Hall, Michael Rosbash and Michael Young for discoveries of molecular mechanisms controlling circadian rhythms.
Young amphibians are the first animals thought to use toxins against rivals of their own species
The Nobel Prize in Physiology or Medicine 2017 was awarded to Jeffrey C. Hall, Michael Rosbash and Michael W. Young for discoveries of molecular mechanisms controlling circadian rhythms.
Submerged electric eels lose current to water, so they apparently leap into the air to minimize their contact with water and maximize their shock value.
Jonathan Losos, biology professor at Harvard and curator of herpetology at the university’s Museum of Comparative Zoology, talks about his latest book, Improbable Destinies: Fate, Chance and the Future of Evolution.
The frogs' calls are too high-pitched for the frog to detect, which may be an artifact of evolution. Christopher Intagliata reports.
Ancient crustaceans in dino dung from Utah illuminate herbivores’ broad diet
The massive slabs of Earth’s crust might have started their journey more than 3.5 billion years ago
When forced to compete for mates, some birds develop longer penises and others almost nothing at all
The Mexican fish may have evolved strategies that could help humans survive an epidemic disease
Cannibalistic caterpillars prevent disease from decimating their populations by removing infected individuals. Emily Schwing reports.
Gene-expression analysis suggests that marsupial placentas take two different forms
The notion that behavioral differences between the sexes are innate and immutable does not hold up under scrutiny
Smooth vertical surfaces like windows reflect sound waves away from bats—meaning bats can't "see" windows and similar obstacles with echolocation. Christopher Intagliata reports.
Analysis of 215,000 people's DNA suggests variants that shorten life are being selected against
Rock-encased bone shard left behind by thieves allowed researchers to determine that the remains are probably more than 13,000 years old
Even though we do not hunt pumas for food, the big cats have reason to fear us