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10 Unsolved Airplane Mysteries

science.howstuffworks.com/transport/flight/modern/10-unsolved-airplane-mysteries.htm

Since 1948, more than 100 aircraft have gone missing while aloft and never been found. Here are 10 unsolved airline mysteries from HowStuffWorks.

10 Plants Lost to History

science.howstuffworks.com/life/botany/10-plants-lost-to-history.htm

Are trees and shrubs as cute as pandas? As awe-inspiring as whales? Maybe not, but many are in danger of going the way of the dodo — just like countless leafy greens before them. Learn about some amazing plants we lost to history.

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