Humans were polluting the air with lead as far back as 3,900 years ago.
Plants that were frozen in glaciers 400 years ago are growing again as those glaciers melt away.
Giant East African land snails are wreaking havoc in South Florida.
Once the Earth warms to a critical temperature, permafrost in Siberia will melt, releasing massive amounts of carbon.
Mysterious “fairy circles” on African plains are caused by termites, which destroy patches of grass but help the surrounding grass thrive.
Just one week of sleep deprivation alters the expression of at least 711 different genes.
Researchers have successfully copied a molecule that protects our bodies from our own immune systems.
Dung beetles use the Milky Way to roll their dung balls in a straight line.
Migraine headaches are associated with lightning storms.
A type of plant can sense mating chemicals from fruit flies, and builds up its defenses when it does.
A brain imaging study supports growing evidence linking fructose to weight gain.
Flu forecasts may soon become a news staple.
Seaweed-covered corals emit a chemical that entices goby fish to clean them.
Children in the classic “Stanford Marshmallow Study” may have been more strategic than we thought.
Short-wave ultraviolet radiation can clear dangerous germs from hospital rooms.
Killer whale moms live long past menopause, apparently to support and protect their adult sons.
Deforestation can lead to droughts hundreds of miles away.
Populations of ocean bacteria have a few designated fighters, which release antibiotics that don't harm their own community.
People living as hunter-gatherers burn roughly as many calories per day as those in industrialized countries.
Strategically placed grass, ivy, and other greenery can significantly improve air quality in urban centers.