When Were Mirrors Invented?

Polished obsidian, bronze, and copper were used as mirrors for thousands of years until Justus von Liebig invented the modern mirror in 1835.

What are Fire Rainbows?

Fire rainbows are a rare and beautiful weather phenomenon that appear as rainbow-colored wisps of clouds in the sky. Consider yourself lucky if you see one.

Why Were Chainsaws Invented?

Why were chainsaws invented? These handy modern tools have a surprising background. Find out their origins in medicine and in preventing maternal death

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For thousands of years, Europeans had no clue about where birds went during Winter. Until 1822, when a German hunter shot a stork and discovered an 80cm long African spear protruding from its neck. This provided the first evidence of bird migration to Africa.

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