A sieve for molecules

Scientists have long tried to use graphene, which is composed of carbon, as a kind of sieve. But this material doesn’t have any pores. Now, a team has found an alternative material which comes with pores from the outset.

Cameras reveal snowshoe hare density

The number of hares in a forest is a good indicator of how healthy that ecosystem is — and now there’s a better way to find out. A new study shows recently developed camera-trapping methods could be a viable alternative to live-trapping for determinin…

Pig grunts reveal their emotions

We can now decode pigs’ emotions. Using thousands of acoustic recordings gathered throughout the lives of pigs, from their births to deaths, an international team of researchers has translated pig grunts into the emotions they appear to express.