Professor Brian Cox takes a deeper dive into the science of ancient DNA, with two experts returning to answer more of your questions.
How far can we go back in time using DNA? How accurate is ancient DNA when it comes to understanding our past? Why was diversity in DNA vital for the survival of early humans? Do we really share 60% of our genetic code with bananas?

Rethinking sex, artificial wombs and how to up your sperm count
26:58

Decarbonising flying, cleaning up A.I. and the personal cost of climate change
26:07

Cancer vaccines, tumour-killing cells and does fasting work as a treatment?
30:18