TEHRAN, Aug 03 - To find mates, male black widow spiders follow the silk trails left by their rivals, according to a new study. The revelation, detailed this week in the journal Proceedings of the Royal Society B, surprised scientists at the University of Toronto Scarborough.
TEHRAN, Jul 3 -Spiders who exhibit sociability and tolerance when they're first born often become aggressive when they leave the nest and plot out on their own. Now, scientists are beginning to understand why.