What is Coal?
17:07
Coal: Who has it, wants it and uses it
15:50
Fracking and the Environment: Myth and Reality
16:32
The Future of Lithium-Ion Batteries
6:25
How coal is formed - Practically demonstration!
19:06
So You Want to Build a Nuclear Reactor
15:21
How Dying Gas Wells Are Making One Company Rich
20:48
O valor geoestratégico da Groenlândia, explicado
6:39