Understanding the human body is a team effort. That's where the Yachtel group comes in.

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This is Scientific Americans' 60-second Science. I'm Karen Hopkins.

They say it's darkest before the dawn, and that's just the way that sweat bees like it.

These tropical insects, which live on an island in the middle of the Panama Canal, visit

night blooming flowers under cover of darkness.

And a new study shows that the shapes made by gaps in the rainforest canopy

help them find their way home.

The work appears in the journal, Current Biology.

Even though most bees are active in bright daylight,

there are a few species that have become nocturnal due to competition and due to predators.

Eric Warrant, a professor of zoology at the University of Lund in Sweden.

This is particularly true of the warmer parts of the world, such as a steamy rainforests

of Panama.

Warrant and his colleagues have been studying these night flyers, called

Megaloptergenalis, for more than 20 years. We have discovered that, like all bees,

megalopter is able to learn visual landmarks around the nest and presumably also along the foraging

route. They use these landmarks to find their way through the vast forest and to recognize their nests.

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