A new giant extinct shark, the Megalolamna Paradoxodon, was discovered through its fossilized teeth found by the researchers.
Endangered frog population growing in Yosemite Park, but not in the rest of Sierra Nevada.
Images of hurricane Matthew show how big it was coming from the outer space.
Paris Agreement past 55% ratification. It's time for the hard part: is there a way to limit CO2 emissions?
As a hurricane, Matthew invades the places of Colombia, a photographer captured a mysterious yet beautiful image of the red lightning sprites above the storm.
Montana hiker Todd Orr suffered a double bear attack and immediately took to social media to share his experience and warn people.
Scientists warned world leaders to act now because the Earth is getting warmer every day.
Oxygen level fluctuates by 0,7 percent over the past 800,000 years, according to the scientists.
The federal researchers were puzzled when they discovered the rich marine biodiversity of Hawaii, which has the least productive water in the Pacific.
India finally ratified the Paris Agreement -- as promised, on Gandhi's birthday.
Hranicka Propast, the world's new deepest underwater cave, beats the previous record holder, the Pozzo del Merro in Italy by 12 meters deep.