Hannah Devlin is the Guardian's Science Correspondent, and presenter of their science podcast. In this in-depth interview, she explains why she chose journalism over academic biomedicine; talks frankly about sexism in science; discusses her move from Science Editor at The Times, the differences of writing without a paywall, and her view that social media has fundamentally changed journalism; reveals the slate of groundbreaking research she's currently reporting on; and explains why - as the evidence apparently shows - that two G&Ts is the "scientifically perfect" amount.