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The importance of a planet Earth flag
Student and designer Oscar Pernefeldt created a flag of planet Earth which he hopes will be used if extraterrestrial life is ever found on other plants.
Reading, writing, berries! School gardening03:59
The fight against oil drilling in the Gulf03:49
Transforming trash into incredible tiny homes05:04
Parts of Patagonian glacier collapse00:46
How land grabbing could affect parks07:08
How religion clashes with science06:41