• Pulsating planet: Superhot rocks make the Earth roll

    The river valleys are in the North Sea, north of Scotland, beneath a kilometre of water and a further 2 kilometres of sediment. The sea floor here has been slowly sinking ever since it formed. Yet 55 million years ago, something very strange happened. In a geological

  • Sandstorm moves across Arabian peninsula

    A dense wall of dust barreled across the Arabian Peninsula on March 26 – 27, 2011. The massive storm stretches more than 500 kilometers (300 miles) across the peninsula, covering parts of Saudi Arabia, Yemen, Oman, and the United Arab Emirates. This pair of images…