The amount of the gas in the air has not been this high for at least three million years, and scientists believe the rise portends large changes in the climate and sea level.
Astronomers working with NASA’s Kepler mission said Thursday that a pair of newly discovered planets in the constellation Lyra appear capable of supporting life.
Iran has been hit by a 7.3-magnitude earthquake, the most powerful for 40 years, with tremors felt across Pakistan, India and the Middle East.
IBM scientists use a few dozen atoms as stars in their film A Boy and his Atom, which has garnered the title of world's smallest movie.
European Union states are to vote shortly on a proposed ban on pesticides linked to bee deaths in scientific studies.
Would you apply for a one-way ticket to the Red Planet
The world’s first gun made using a 3D printer is successfully tested in the US by a group planning to make the blueprints available online.
Newly discovered bones prove the first permanent British settlers in North America turned to cannibalism over the winter of 1609-10, US researchers say.
A kidney "grown" in the laboratory has been transplanted into animals where it started to produce urine, US scientists say.
Scientists have decoded the genome of the endangered lobe-finned fish that was long believed extinct until a specimen was found in South Africa in 1908.