1
By TED-Ed
Published in 2013
The world needs clean water, and more and more, we're pulling it from the oceans, desalinating it, and drinking it. But what to do with the salty brine left behind? In this intriguing short talk, TED Fellow Damian Palin proposes an idea: Mine it for other minerals we need, with the help of some...
Grade Level   6 7 8 9 10 11 12
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2
By TED-Ed
Published in 2014
Solar power is cheaper and more sustainable than our current coal-fueled power plants, so why haven't we made the switch? The real culprits here are the clouds, which make solar power difficult to control. Alexandros George Charalambides explains how solar towers and panels create electricity and...
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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3
By TED-Ed
"Energy is neither created nor destroyed -- and yet the global demand for it continues to increase. But where does energy come from, and where does it go? Joshua M. Sneiderman examines the many ways in which energy cycles through our planet, from the sun to our food chain to electricity and beyond....
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4
By TED-Ed
Published in 2013
Biofuels can provide energy without the reliance on environmentally harmful fossils fuels -- but scientists are still searching for a plentiful source. Craig A. Kohn demonstrates how cellulose, the naturally abundant tough walls of plant cells, might be the solution.
Grade Level   6 7 8 9 10 11 12
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5
By TED-Ed
Published in 2017
"Deep underground lie stores of once-inaccessible natural gas. There's technology, called hydraulic fracturing, or """"fracking,"""" that can extract this natural gas, potentially powering us for decades to come. So how does fracking work and why is it a source of such heated controversy? Mia...
Grade Level   6 7 8 9 10 11 12
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