- Who should be allowed to compete as a female athlete? New York Times, 29 July.
- Why discrediting controversial academics such as Bjørn Lomborg damages science. The Guardian, 23 April.
- Anti-doping agencies are failing in assessing the scale of the drugs problem. Sporting Intelligence, 28 January (companion to the Nature comment of the same month).
- "Sprinters don't improve after 30. Gatlin's feats are … incredible." Sporting Intelligence, 20 July.