Tag Archives: DW

How green is solar energy really?

More and more solar panels are popping up all over the world – and it’s [...]

How solar energy got so cheap, and why it's not everywhere (yet)

A lot speaks for solar energy. It’s clean, renewable – and now even cheaper than [...]

Geothermal energy is renewable and powerful. Why is most of it untapped?

The potential of geothermal energy seems enormous. If estimates are correct, then the heat under [...]