The ancient technology getting a second wind

05/26/20 • 24 min

Old ships, powered by the wind, are sailing small amounts of cargo around the world again to help cut pollution. Some of them were built more than 100 years ago. The shipping industry moves 80% of traded goods around the planet. But the diesel engines that propel modern cargo ships through the oceans burn the dirtiest type of fuel.

Nick Holland speaks to sailors and brokers who, for the sake of the environment, are breathing new life into these vintage vessels. And he hears how new types of sails could get monster-sized modern cargo ships using the wind as well. Producer / Reporter: Nick Holland

Previous Episode

Electricity that grows on trees

Scientists in Italy have discovered that trees generate an electrical charge every time the wind blows strongly enough to make their leaves touch one another.

The researchers, from the Italian Institute of Technology, have managed to harvest enough energy this way to power 150 LED lights from a single leaf.

We meet them, and others, who are trying to make use of untapped, natural sources energy.

We hear from a project trying to produce electricity from the interaction of fresh and salt water where rivers meet the sea.

And we talk to a geologist in Iceland, who’s helped dig nearly 5km beneath the surface of the Earth. At that depth, the temperature can be about 600C - the idea is to mine the heat and turn it into energy. Producer/Reporter: Daniel Gordon Picture: Getty Images

Next Episode

No more bosses

Can companies operate better without managers? We hear from people who’ve got rid of managers and say it has helped them do a better job, made them happier and saved money.

But there are pitfalls, too. Co-ordination and hiring talent for what are usually considered top management jobs can be a challenge when there’s no traditional hierarchy.

Produced and presented by Dina Newman.

Picture credit: Getty Images