Justin Trudeau went boxing in New York City yesterday and the Twitter responses range from “be still my foolish heart” to “how embarrassing.” The prime minister was at a Brooklyn gym for a stripped-down snapshot session of change-room odour. Later, Mr Trudeau held a question-and-answer session at New York University where some queries packed a punch (good one). But the punch wasn’t a knockout wallop. One student asked how Trudeau could justify backing new oil pipelines after campaigning on climate change. He said that he was very clear before the election that he backed the Keystone XL project and didn’t actually campaign against the fossil-fuel industry. He called halting fossil fuel development simplistic. Better than boxing maybe. Mr. Trudeau is at the United Nations today signing a climate treaty.