Most Commented Stories Tagged: renewable energy

Science, Tech & Environment

Geo answer

For our Geo Quiz today, we're looking for the largest -- and northernmost -- island in the Indonesian archipelago. The answer is Sumatra. Anna Sussman reports that the rush for environmentally-friendly fuel is having a devastating impact on the island's endangered orangutans.

Arts, Culture & Media

Geo answer

For today's Geo Quiz, we asked just how long a flight that would be if the flight plan circled the earth at the equator. The answer is 24,901 miles?or approximately 25,000 miles.

Lifestyle & Belief

Windpower from Scratch

After dropping out of school as a teenager because of poverty and drought William Kamkwamba built a windmill out of discarded materials in his village. Kamkwamba tells anchor Marco Werman how the windmill brought electricity to his tiny village in Malawi.