LEDs. We’ve all heard about them. In our TVs, in our computer monitors, and in our homes. It’s a word we hear often – but do we really know what it means?
We sent Vitória Barim Pacela, our light emitting diode correspondent, to find out how LEDs revolutionised our world’s light
People have always wanted to change the weather – be it for better crops, prevention of damage, or just because they don’t like rain. Agencies for weather modification can be found in several countries. Has this become reality?