role and harnessing the power of nature through renewable energy rather than orchestrating its destruction. reporter: so the push at this conference will be for very specific, concrete plans on all of those things the prime minister was talking about. not just in the long term. a lot of countries have come in with big promises about hitting net carbon and without the details of getting there. the science tells us without achieving that countries have to start cutting deeply now quickly making deep reductions by around half come 2030 otherwise the goals of this conference and indeed the goals of humanity will eventually slip away. go to nic in rome. pretty gloomy boris johnson at the g20 where he ended the summit with an agreement and no