Bull shark 'baby food' under extreme threat

Juvenile bull sharks generally remain inside rivers, sheltered by mangroves while they are young and more vulnerable to predators, before moving out into coastal habitats. Until now, scientists assumed they relied on these ...

Bull ant evolves new way to target pain

Australian bull ants have evolved a venom molecule perfectly tuned to target one of their predators—the echidna—that also could have implications for people with long-term pain, University of Queensland researchers say.

page 1 from 7