Semitransparent solar cells with natural looking color and strong heat blocking offer a realistic way for windows to generate electricity and cut energy use in large buildings. (Nanowerk Spotlight) ...

The world’s oceans cover more than 70% of Earth’s surface. They’re filled with currents, some much stronger than the fastest flowing large rivers. These currents can be harnessed as clean, marine ...

Homes with solar power and electric vehicles can sell excess energy to the grid. Nattrass/Getty Images South Africa has committed to reaching phasing out human-caused carbon pollution by 2050. To get ...