"Why do people find it easier to get to sleep when it's dark, rather than light?" Image by Wildfeuer.

Today’s live chats have been pretty intense…

Cancer Zone got deep this morning asking “do you think we will evolve any more than we already have?”

Students have also been asking why it’s easier to sleep when it’s dark

and how long can people live after being diagnosed with cancer.

Cell Zone live chats have got students asking: “are brain cells slimy?” and “how many cells are in the reproductive system?” And all the Cells Zone scientists have been letting us know which cells they think are the most important.

Genes Zone students have been finding out about scientist Joanna’s arthritis confrence in America and asking: how does gene therapy work considering how small dna is?

With loads of live chats and questions scientists are starting to feel the strain but students definitely appreciate all their  hard work:  “thankyou very much for answering our question and also thanks all of you for your time” – Student.