Scratch and Sniff: Feather Louse Sex Ratio Skewed by Citrus Scent of Seabird

By Meredith Swett Walker Humans are a species where males and females are pretty equal — at least numerically. The number of boys born is roughly equal to the number of girls — a ratio of 1:1. Even if you look at the entire population of humans, not just newborns, the sex ratio is still […]

Removing Head Lice Eggs with Ordinary Conditioner is Just as Effective as Using Special Products

Eggs from head lice, also called nits, are incredibly difficult to remove. Female lice lay eggs directly onto strands of hair, and they cement them in place with a glue-like substance, making them hard to get rid of. In fact, the eggs are glued down so strongly that they will stay in place even after […]