Engineering

Photocatalytic concrete for clean air in underground tunnels

The air quality in underground road tunnels tends to be worse than in other road environments due to the poor air circulation. To address this issue, researchers at the Korea Institute of Civil Engineering and Building Technology ...

Energy & Green Tech

Bionic leaf turns sunlight into liquid fuel

The days of drilling into the ground in the search for fuel may be numbered, because if Daniel Nocera has his way, it'll just be a matter of looking for sunny skies.