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EDITOR'S CHOICE:
DEEP CUT It may sound like something out of bad sci-fi movie, but a chainsaw-wielding robotic submarine is roving under a Canadian lake for real. Its job is to cut down trees that were submerged decades ago after the valley was flooded by a hydroelectric dam. The three-tonne yellow submersible is called Sawfish and may soon be available for sale to other loggers - it is believed that there are some 200 million drowned trees around the world... MORE http://www.newscientist.com/news/news.jsp?id=ns99994811
TOP STORIES: Life on Mars - but 'we sent it' There is life on Mars, one NASA-funded microbiologist tells a conference - unfortunately it is just spaceship-borne contamination http://www.newscientist.com/news/news.jsp?id=ns99994812 Earth's 'quasi-moon' is wayward asteroid The object actually orbits the Sun, but its corkscrew path means it appears to orbit Earth that from time to time http://www.newscientist.com/news/news.jsp?id=ns99994814 Early humans swapped bite for brain Humans may owe their big brains and sophisticated culture to a single genetic mutation that weakened our jaw muscles about 2.4 million years ago http://www.newscientist.com/news/news.jsp?id=ns99994817 Beach rover uncovers Mars's ancient oceans The landing site of the rover Opportunity was once the shore of a shallow and very salty sea, NASA scientists declare http://www.newscientist.com/news/news.jsp?id=ns99994808 |
