Material: Tunguska Fireball & Disappearing Bees 03072008

Tungunska Fireball On the 30th June 1908, a huge fireball hurtled towards the Tunguska River region of Siberia. The explosion was as powerful as 1000 Hiroshima bombs and knocked down 80 million trees. But 100 years later scientists are yet to find an impact crater or tell-tale meteorite remains. So what happened? Also, disappearing bees. Over a third of all the honeybees in the United States have died in the past two years. Beekeepers in the UK are noticing declines in the number of bees ...