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/ 22 December 2010
For weeks, three kayakers exploring rivers in Africa came together in a close formation designed to ward off hippo and crocodile attacks.
Scientists listening to underwater microphones have detected an unusual swarm of earthquakes off central Oregon, something that often happens before a volcanic eruption — except there are no volcanoes in the area. There have been more than 600 quakes over the past 10 days in a basin 240km south-west of Newport.
Looking high and low, Robbin Thorp can no longer find a species of bumblebee that just five years ago was plentiful in north-western California and south-western Oregon in the United States. Thorp, an emeritus professor of entomology from the University of California at Davis, found one solitary worker last year along a remote mountain trail in the Siskiyou Mountains, but hasn’t been able to locate any this year.