a1 This dinosaur might have used its feet to snag prey in midair like modern hawks Modern birds evolved from dinosaurs, but it’s not clear…
d4 50 years ago, the United States and Soviet Union joined forces for science U.S. and Soviet leaders … signed agreements on space, s…
c3 Lost genes may help explain how vampire bats survive on blood alone Surviving on blood alone is no picnic. But a handful of…
d4 Invasive jorō spiders get huge and flashy — if they’re female Some thumbnail-sized, brown male spiders in Georgia cou…