One is America’s youngest-ever congresswoman, the other a Swedish schoolgirl. Two of the most powerful voices on the climate speak for the first time

Alexandria Ocasio-Cortez enters a boardroom at her constituency office in Queens, New York, after a short delay which, a political aide hopes, hasn’t been caused by a constituent waylaying her in the corridor. (“They can get really excited to meet her.”) Greta Thunberg is in her home in Sweden, her father testing the technology for the video link while the teenager waits in the background. The activists have never met nor spoken but, as two of the most visible climate campaigners in the world, they are keenly aware of each other.

Thunberg, now 16, catapulted to fame last year for skipping school every Friday to stand outside the Swedish parliament, protesting against political inaction over the climate crisis and sparking an international movement, the school strike for climate, in which millions of other children followed suit. Ocasio-Cortez, the Democratic Representative for New York’s 14th congressional district is, at 29, the youngest woman ever to serve in Congress, whose election over a well-funded incumbent in 2018 was a huge upset to politics-as-usual. She has been in office for less than a year, which seems extraordinary given the amount of coverage she has generated. In February, Ocasio-Cortez submitted the Green New Deal to the US House of Representatives, calling for, among other things, the achievement of “net-zero” greenhouse gases within a decade and “a full transition off fossil fuels”, as well as retrofitting all buildings in the US to meet new energy efficient standards.