Question: what is your favourite scientific fact?

Vera Weisbecker answered on 18 Jun 2011:

Oh wow, that is a good question and I’ve been thinking hard about it. I don’t think I can come up with a single fact because there are so many exciting ones! Right now the most exciting thing for me is that you can actually modify your DNA by behaving in a certain way – if you eat only junk food, for example, different genes get turned on/off by a chemical and you develop a genetic, but non-heritable, risk of cancer. It is hard to reverse these effects and it looks like you can even pass down some of these to your children.