Every autumn, a quiet mountain pass in the Swiss Alps turns into an insect superhighway. For a couple of months, the air thickens as millions of migrating flies, moths and butterflies make their way through a narrow opening in the mountains. For Myles Menz, it’s a front-row seat to one of the greatest movements in the animal kingdom.
Menz, an ecologist at the University of Bern in...
Hoverflies not only defy gravity, they may not even know it’s there.
Insects known for their aerial acrobatics — like hoverflies and dragonflies — have to execute twists and turns with extreme precision. Whether they use gravity to orient themselves and control their altitude has been a mystery.
Rather than sending flies into space to test such abilities, Roman Goulard of Aix-...