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Ants are usually found in large numbers. But how many of them are there in total on earth?

How many ants are there?

A tethered flying monarch butterfly orients in the flight simulator with respect to a green light spot. While flying, microelectrodes record the butterflies’ brain activity.

Sun Compass on Demand

A nocturnal dung beetle climbing atop its dung ball to survey the stars before starting to roll.

Bright Lights, Bad Orientation

A buff-tailed bumblebee and a 3D model of the bumblebee brain, based on micro-CT. The blue regions symbolise the primary olfactory centres. The yellow/orange regions process visual information from the compound eyes, the turquoise coloured visual information from the ocelli. Shown in red/orange are the mushroom bodies important for learning. The insects' inner compass, the central complex, is green.

An Atlas of the Bumblebee Brain