There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
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Some farmers in Kenya are using elephants' natural fear of bees and building "beehive fences" that keep wild elephants from trampling the crops. It keeps the farms safe, and prevents farmers from having to kill elephants to defend their livelihood!
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In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
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A Swiss man replaced his car's broken heater with a fully functional wood burning stove.
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Brass doorknobs automatically disinfect themselves in about 8 hours.
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