Episode 286 - April 01 2013
Why a new study is raising concerns about certain types of cook stoves. How scientists found a way to release the energy in coal without burning. How hybrid mixture of sand and paraffin could help keep campers warm at night.
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vor 11 Jahren
Why a new study is raising concerns about certain types of cook stoves. How scientists found a way to release the energy in coal without burning. How hybrid mixture of sand and paraffin could help keep campers warm at night.
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