Super-Powered Earth: Energy from the Rays of the Sun

It's not just plants that use the sun's energy to make their food. So can we. And we can do much, much more. From Roman baths to modern-day spacecrafts, we have found ways to use the sun's light and heat. Yet, even today, we are able to capture only 1 per cent of this energy. Find out how we can make the most of the sun, and why thats important for our planet.