MONTPELLIER, France — Researchers have uncovered an unusual survival strategy in Iberian harvester ants that turns basic biology on its head: The queens can produce eggs that develop into two ...

Essential oils are another natural and fragrant way to repel pests. “Some oils, such as peppermint, tea tree, and eucalyptus, have been shown to deter insects like ants,” Frazer says.

Genetic diversity is essential to the survival of a species. It’s easy enough to maintain if a species reproduces sexually; an egg and a sperm combine genetic material from two creatures into one, ...