A tiger shark circling the carcass of a young humpback whale. A red-eyed tree frog plagued by mosquitoes. A Maori octopus selecting its prey from a huge ­aggregation of spider crabs. A grey-headed ...

Volunteer fossil hunters and trained paleontologists uncover a new Australian dinosaur and the oldest known megaraptorid.

If you are bitten by a large, black spider in Australia, the medical advice is to treat is as an emergency. However, not all ...