By following honeyguides, a species of bird, people in Africa are able to locate bees’ nests to harvest honey. Research now reveals that humans use special calls to solicit the help of honeyguides and that honeyguides actively recruit appropriate human partners. This relationship is a rare example of cooperation between humans and free-living animals.

In the next 35 years, we’ll have to produce more food than all of the world’s production over the last 2000 years combined. So what will the farms of the future look like?