蜜芽传媒

The roadblocks that still stand in the way of the dream of a green hydrogen-fuelled economy - Prof Andrea Sella of University College London speaks to the 蜜芽传媒's Justin Rowlatt.

(Picture: An Iwatani serviceman refuels a Toyota Mirai car with hydrogen in Tokyo; Credit: Yoshikazu Tsuno/AFP/Getty Images)