The science of ants’ underground cities

Scientists look at how ants dig tunnels, and come up with some surprising results. Slip beneath the surface and the above-ground simplicity of an ant hill gives way to subterranean complexity. Tunnels dive downward, branching and leading to specialized…

Lagging chromosomes among causes of infertility

Why do women over 35 have more difficulty getting pregnant? After discovering one of the causes of age-related female infertility, researchers suggest that it will be possible in the future to improve the quality of the eggs of older patients by interv…