The mysterious Montserrat tarantulas were bred in captivity for the first time at the Chester Zoo in England.
Humans love elephants for their grandeur, human-like emotions, and cognitive capacity, but the majestic beasts offer the world and its ecosystems much more than charisma, ecologists say.
Mt. Pinatubo erupted just before the first sea level temperature-gauging satellite was launched in 1991. Why that matters.
Earth Overshoot Day – marking the point in the year when we've used up more natural resources than we can regenerate – falls on Aug. 8 this year, the earliest date yet.
The Schoenbrunn Zoo in Vienna's Giant panda Yang Yang has given birth to her fourth cub. It's about 800 times smaller than mom.
A US government report warns that the US will likely fall short of its 2025 fuel-economy targets because low gas prices have prompted Americans to buy less-efficient cars and trucks.