Within every muscle of every living species with a backbone, a protein called myosin tugs on a partner protein to generate a ...

Researchers have long assumed that a tube in the famous Pikaia fossil ran along the animal’s back. But a new study turned the fossil upside down. By Carl Zimmer Over the past 500 million years, ...

Scientists have long puzzled over the gap in the fossil record that would explain the evolution from invertebrates to vertebrates. Vertebrates, including fishes, amphibians, reptiles, birds, mammals, ...

Researchers recently discovered that the sea lamprey, a modern representative of ancient jawless vertebrates, fights invading pathogens by generating up to 100 trillion unique receptors. These ...

A few strange pits and trails preserved in ancient Italian rocks have changed what scientists thought they knew about the ...

Nov. 21 (UPI) --The research is clear, the physiological complexity that makes modern humans -- and other mammals -- unique from simpler species is a product of gene regulation, not genet quantity.

The aptly named resplendent quetzal is prized for its plumage. Golden poison frogs are popular creatures in the pet trade. Pangolin meat is considered a delicacy, and their scales are used in ...

Why is Christian Science in our name? Our name is about honesty. The Monitor is owned by The First Church of Christ, Scientist, and we’ve always been transparent about that. The church publishes the ...