US
Study projects that by 2050, Pakistan could experience more than 30 days of extreme heat per year
As a 16-year-old Swedish girl addresses world leaders at UNGA in New York
The planet and star are about 600 light-years from Earth in a constellation called Columba
NASA's scientists think the conventional definition of planet has many flaws and propose to change it
Habitable planet found in solar system next door
The planet was detected by the European Southern Observatory Telescope in northern Chile
The gaseous planet is the size of Jupiter and has a wide orbit, revolving around its two stars in 1,107 days
The rocky planet is slightly larger than the Earth and, like Venus, its surface is too hot to support liquid