Avsnitt 2

Rio de Janeiro was recently awarded the two biggest sporting events in the world — the Olympics and World Cup. But before they'll be ready, they still have one major problem — frequent widespread blackouts. So now, Brazil is currently building one of the largest hydroelectric projects in the world . Host Danny Forster takes us into the wilderness 100 miles from Rio, where workers are rapidly building 5 massive canals, and tunneling through 7 mountains, to move a powerful river through two dams — all to make sure that while the whole world is watching Rio, the lights stay on.