Marijuana uses more water and energy than hospitals and commercial buildings. Cannabis growers now try to become environment-friendly and organic.
Antarctica is now being threatened by insects and plant invasion due to soaring temperatures.
This Fathers' Day, it is time to appreciate animals that make great stepdads -- because they, too, deserve some love.
Texas-sized melt in Antarctica worries scientists.
Why are the rocks at the Vermilion Cliffs in Arizona so red?
A proposed extensive network of hydroelectric dams may jeopardize the future of the Amazon basin.
Gray seal numbers are clearly increasing, according to scientists.
The rare anomaly is only the 10th ever to be recorded in history, scientists say.
The eighth natural wonder of the world in New Zealand was not totally destroyed by a volcanic eruption but could be restored.
The National Weather Service forecasts that heat wave will hit Southern California this month.
Jelly-like sea creatures are invading the West Coast.