Let me make myself clear though: yes, I agree that smoking causes both cancer and heart disease.

FORBES: Smoking Bans Do Not Reduce Heart Attacks

My copy of Asimov on Science, which collects his best essays on science, is what I read to teach myself how to make my own writing accessible and clear.

FORBES: Isaac Asimov's Five Best Short Stories

Mr Bryson, 22, said he wanted to make it clear there was "no personal issue between myself and Willie".

BBC: Northern Ireland