How invading fungus forces zombie ant's death grip

If it's thoughts of zombies that keep you awake at night, you shouldn't be worried about zombie humans; it's the carpenter ants (Camponotus castaneus) that should concern you most. When infected by a specialised fungus (Ophiocordyceps ...

Elbows key for walkers' efficiency

Wandering through the Harvard campus one day in 2015, graduate student Andrew Yegian recalls how something unusual caught his eye. "I noticed a person running with straight arms," he explains. This really stood out for Yegian, ...

Poison dart frog brains can hold a mental map

Frogs aren't meant to be able to store a mental map in their brains. 20 years ago, Lainy Day from the University of Mississippi, USA, tested the place memory of amphibians and lizards, but none appeared capable of forming ...

How the snail's shell got its coil

If you look at a snail's shell, the chances are it will coil to the right. But, occasionally, you might find an unlucky one that twists in the opposite direction—as fans of Jeremy thelefty snail will remember, these snails ...

Mystery of how beetles that live in aquifers breathe solved

You can't always count on finding water above ground in Australia. Some rivers flow through the sand beneath their beds and arid calcite crusts in Western Australia seal off water trapped in permeable rocks beneath. Yet, ...

Sonar disturbs blue whales feeding

No one really knows why pods of whales spontaneously drive themselves aground. Military sonar may be one culprit, and the need to train and test submarine tracking technology in open water could put the US Navy in conflict ...

Hot great white sharks could motor but prefer to swim slow

Yuuki Watanabe has always been fascinated by speed and power. As a child, he recalls being transfixed by the raw strength of great white sharks (Carcharadon carcharias). 'They look cool' says Watanabe, from the National Institute ...

Male killer whales hunt more than females

It's hard to tell just how imperilled killer whales are. With several different forms—some of which may even be different species—it's unclear which are at serious risk and which are less vulnerable. But one group is ...

page 5 from 19