ecology
These fish may feel pleasure while being groomed by other fish
An experiment with threadfin butterflyfish finds that these fish may experience pleasure while being cleaned by bluestreak cleaner wrasse — suggesting this capacity goes far back in animal evolution.
Scientists want to track the world’s biodiversity using DNA in the air
Scientists have found a way to sample DNA out of the air on a large scale — making it possible to one day track the health and well being of all kinds of species around the world.
