June 30 in strange history
What strange thing happened on June 30? Here is the story from our files for this date, each checked against sources.
The Tunguska Event (1908)
On 30 June 1908 something exploded in the sky over remote Siberia and flattened about 2,150 square kilometres of forest. No crater was ever found. Here's what scientists now think happened at Tunguska.