Authorities closed the surrounding Cotopaxi National Park after two minor blasts occurred Friday.
Humanity currently demands 1.6 Earth's worth of resources from the planet each year.
Californians eye approaching El Niño, potentially the second strongest on record, with hope and trepidation.
The United Nations estimates the world population will reach between 9.5 and 13.3 billion by the end of the century.
The accidental release of millions of gallons of potentially harmful mine waste into a Colorado River has the EPA scrambling to do damage control.
Considerable human intervention will be necessary to save a number of butterfly species in Britain from going extinct by 2050, a new study has found.
The Environmental Protection Agency now estimates that three million gallons, rather than one million, of heavy-metal laced water spilled into the Animas River.
While US leaders remain bogged down in debate over global warming, local communities are acting on their own to hold back rising seas. Witness Miami Beach's elevated streets.
In envisioning future technologies, Cobb writes that we often ignore a crucial question: How will we power tomorrow's heavily automated world without ruining the planet?