Rising global temperatures may diminish the amount of energy available from wind, a new study says.
A California project foreshadows hard choices for coastal cities weighing benefits and costs of new development.
Congress helped bolster the corn ethanol business in Iowa by mandating the Renewable Fuel Standard in 2005. But scientists are concerned about the unexpected consequences of putting more of Iowa's land into corn production.
Montana's recreational fishing and agricultural industries depend on cool waters flowing from melting snow high in the mountains throughout the summer. But across Montana, rising temperatures are causing a series of changes.