00:00The library that burned twice the tragic story of priceless knowledge lost forever.
00:06The world's greatest knowledge destroyed by fire, twice.
00:11In ancient Egypt, the great library of Alexandria held hundreds of thousands of scrolls,
00:16the sum of human knowledge. Wars, politics, and even Julius Caesar's siege destroyed it not once,
00:24but many times over the centuries. Entire books on medicine, astronomy,
00:31and inventions were lost forever, things we might never rediscover.
00:36The greatest tragedy in history might not be lives lost, but knowledge forgotten.