There's a regenerative candle that creates a new candle as it melts.
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Mico headphones read your brainwaves and select music based on your state of mind.
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Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
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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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