For some people, the sight of a spider egg sac is incredibly unsettling. They may be tempted to immediately destroy or remove ...

After a spider finishes weaving its web, it sometimes adds one last touch. A bright zigzag down the middle, like a silken “X.

Deep in the cave recesses, springs feed a stream. But this isn’t fresh mountain water. It’s a sulfidic brew, loaded with ...

Ironically, though, that’s wonderful news for palaeontologists, as the love scars left behind by these prehistoric couplings ...