Aluminum used to be more valuable than gold!
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According to studies, men change their minds two to three times more often than women.
72
The bark of an older redwood tree is fireproof.
65
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
Iron weighs more after it rusts.
68
Balsa wood is classified as a hard wood!
41