Science Links for Nov 26
NORTHERN Australia is facing a fresh wave of potentially catastrophic mammal extinctions, experts warn.
All the dolphins at the institute are trained to hold onto any litter that falls into their pools until they see a trainer, when they can trade the litter for fish. In this way, the dolphins help to keep their pools clean. Kelly has taken this task one step further. When people drop paper into the water she hides it under a rock at the bottom of the pool. The next time a trainer passes, she goes down to the rock and tears off a piece of paper to give to the trainer. After a fish reward, she goes back down, tears off another piece of paper, gets another fish, and so on.
The spider eats the juicy orange tips (“Beltian bodies”) of the leaves of the acacia tree, which are protected by ants in a classic mutualist relationship…
Susumu Ohno’s original definition of junk DNA: