Can the world rely on renewable energy? | Future Earth | BBC News

What are the challenges the world faces in the transition to renewable energy – and what are the possible solutions?

The BBC's Carl Nasman learns about the US' first 100% renewable-powered city; the world’s largest solar farm; and the research project literally getting energy from thin air.

This is episode three of Future Earth, a series exploring today’s most important developments in climate science and sustainability.

For more climate news and hopeful developments, subscribe to the Future Earth newsletter here: https://cloud.email.bbc.com/FutureEarth_Newsletter_Signup?

00:00 Sealing off abandoned oil wells
05:47 World's largest solar farm
11:00 America's first 100% renewable energy city
14:37 Decarbonising aviation
21:19 Sand batteries
22:22 Harnessing subway heat

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