Day 3 and there’s no let up in the number of chats and questions – 4,400 students registered and nearly 2,500 answered questions, not to mention loads more chats!

Today’s highlights in the Energy Zone:

• A great answer from Chia-Yu:

Do you have to be smart to be a scientist?

• And Rhod and Helen start off discussions on sources of energy…

Do you think we will come up with an alternative to fossil fuels within the next 10 years or do you think much more work is needed?

What is the most useful energy and why?