About 9,600 types of trees in the world are at risk of extinction.
Octopuses could escape in aquarium or unscrew glass jars because they are indeed smart.
The Earth's CO2 levels could rise as high as when dinosaurs roamed, and scientists are not sure how humans could handle it.
Angkor Wat is the largest religious monument in the world constructed in the 12th century.
Climate change is real, and a series of photographs from the Geological Society of America proves it.
Good news for manatees: they are no longer endangered, but government should not be complacent, as they are still threatened.
Could this be the face of a tyrannosaur equipped with a "sixth sense"?
Mice may have been following humans around for 15,000 years, new study suggests.
The Arctic is turning green as the marine plankton flourish in the thinning ice sheets of the area.
Tasmanian tigers may still be roaming around Australia; officials will start their search by April.
Primate brains may actually have increased in size - thanks to diet, not social communication skills.