Princeton biologist Iain Couzin has found a society in which hundreds of thousands of travelers speed along densely packed roadways, transporting huge amounts of materials, all without a bit of ...

They’re always hungry and thirsty. They’re sensitive to the weather. They travel in groups and overstay their welcome. And they’re, well, pests. Teenagers on summer vacation? Relatives visiting from ...

A trail of miniature moving specks lines the countertop, zig-zagging along the cupboard. These little critters are hoping to find anything sweet – a glob of sticky honey left to drip down the jar, a ...