View full lesson: http://ed.ted.com/lessons/howdoesfr...
Deep underground lie stores of onceinaccessible natural gas. There’s a 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 Nacamulli explains the ins and outs of fracking.
Lesson by Mia Nacamulli, directed by Sharon Colman.