EarthEarth's cloudy demeanour unveiled by NASA's Aqua satellite A striking map of the planet's average cloudiness has been generated with data from a NASA satellite that's been watching the clouds for more than a decade Regulars
EarthIn the beginning: How Earth got its continents Dry land was essential for life like us to evolve – but how did Earth evolve dry land? A unique mountain landscape in northern Pakistan holds the clues Features