A nuclear power plant in Ohio leaked radioactive tritium into groundwater, but now the leak's been patched up and there's no sign that Lake Erie was contaminated.
The countdown to the 2014 Winter Games has come with plenty of bad news, including ecological destruction and harassment of environmental activists.
Ranchers want wild bison in Yellowstone inoculated against a cattle disease, but their proposal for shooting vaccine into the beasts with air guns was rejected.
The famously polluted city will also ban new steel and cement factories and oil refineries, and will try to control the number of cars on its roads.
Rattled residents are calling for a ban on injecting fracking wastewater underground. Texas regulators don't seem very receptive.
Either way, it was really hot. In fact, 2013 was the 37th year in a row of above-average global temperatures, according to NOAA.
Scientists have discovered that bees that transmit a crop-wilting virus between plants can become infected by the disease, which could play a role in colony collapse disorder.
Environmentalists are arguing in court that AquAdvantage GMO salmon could be considered "toxic" under Canadian law.
Scientists say baby Jesus' meteorological namesake will become a thundering hulk more often as the climate changes.