Researchers had been studying the green alga Chlamydomonas reinhardtii for decades without seeing evidence of an active virus within it -- until researchers not only found a virus in the alga but ...

But can cats cry? Do kitty tears mean your precious furball is unhappy or depressed? Before you set off in search of some feline Prozac to soothe your pet’s psyche, take it from a veterinarian. “If ...