Scientific American.com

Bird flu fears have focused on the poultry and dairy industries and human health. But wild animals are threatened, too—at scales no one fully understands

The H5N1 avian flu is circulating in cows and other mammals. Whether it will make a permanent leap to humans is another question

Your favorite word game with a twist of science

Bird flu was nearly everywhere in the U.S.—in chickens, cows, pet cats and even humans. Cases have gone down, but experts warn that it hasn’t disappeared

Influenza viruses like bird flu can mix and match their genomes, and this has played a role in at least three of the last four flu pandemics

Newly discovered “Gwada-negative” is the rarest of 48 known blood groups

When large masses of water are moved from one place to another, this changes the shape of Earth and leads to a phenomenon called true polar wander