The discovery of DNA was pretty important – tells us a lot about us and how we’re made. If I could experiment anything I would try to make bacteria harmless so we can just live together nicely and be friends!
If I could do anything, I would want to put electrodes in someone’s brain and see how their brain cells are working. But that is not an ethical experiment – I’m sure you wouldn’t want me opening your head up. So we have to put people in brain scanners instead. That way, we get a picture of how the brain works without opening up the head or harming the person.
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