A dab of the venom of the fire ant (seen at left) would kill some insects, but not Rasberry crazy ants (at right). When attacked, the crazy ants secrete a poison neutralizing acid. By rubbing themselves down with this acid, crazy ants live to keep fighting — and gaining turf.
Argentinosaurus was likely the largest dinosaur ever to walk the Earth. It probably traveled at speeds of around 8 kilometers (5 miles) per hour, new analyses suggest.
A region of star births nestled within the ingredients needed for star formation: clouds of interstellar gas and space dust. The nebula here resides 20,000 light-years away in the constellation Carina. It contains a central cluster of huge, hot stars, called NGC 3603.
Biologists find archaea a true curiosity. They make up one of life’s three main branches. The two better known branches are bacteria and eukaryotes (u KARE ee oatz). That last branch includes animals, plants and fungi. But archaea have remained mysterious. Very little is known about them. In fact, their unique status wasn’t even recognized until relatively recently, in 1977.
A newly harvested plant, fruit or vegetable does not turn off — like a switch — and die, scientists report. Instead, an internal “clock” inside the fresh-picked plant continues to tick away. It responds to light and darkness, just as when it had been rooted in the soil.