Erratic southern invaders repel rivals with acid.
Neanderthal traces appear in genes for hair and skin.
Scientists locate body regions where emotions spark a response.
Telescope observations reveal atmospheric water on exoplanets.
Bacterial infusions can heal gut microbe imbalances.
Is our family tree due for a pruning?
Earlier Arctic plant growth is too early for migrating caribou.
Constant vigilance rewards hobbyist astronomers.
Stem cell mini-brains reveal how brain regions organize.
Dung beetles reduce harmful methane emissions in cow feces.