Why wave power isn’t everywhere (yet)

Why wave power isn’t everywhere (yet)

11:16 | The oceans, that cover most of the planet, are full of energy. So much, in fact, that if we could harness that of all the waves, we’d fulfill global demand three times over. There’s just one small problem.

The truth about hydrogen

The truth about hydrogen

12:07 | Some say it’s the fuel of the future that will soon power large parts of our economies. Others say it’s just a hoax propagated by the oil and gas industry.

How to fix the world’s concrete problem

How to fix the world’s concrete problem

8:38 | Concrete is simple, cheap, strong and lasts long. But the wonder material that’s all around us is responsible for 8% of global CO2 emissions — and it’s not easy to change that.

How green is solar energy really?

How green is solar energy really?

9:02 | More and more solar panels are popping up all over the world – and it’s easy to see why: They provide clean energy at falling prices. But there are also some not-so-green sides to this technology.