What kind of new scientific discovery would be most exciting to you?

1. **How life got started on Earth**. We'll never know for sure, as we weren't there, but it's plausible that someone might be able to recreate a life creation event using accelerated evolution. An important related question is: was life inevitable given the physical conditions on Earth, or was it an almost incredible fluke? 2. **Ageing**. Can we stop it or even reverse it? This sounds like science fiction but studies in mice suggest it might be possible. If you can solve ageing, you solve multiple diseases in one go. 3. **Continuous nuclear fusion**. Unlimited and cheap, almost pollution-free energy would truly be a game changer. 4. **Dark matter**. Roughly 27% of the universe and dark matter and an even more astonishing 68% of the universe is dark energy. Our understanding of the universe will remain severely restricted until we can explain these phenomena.