jenny jones, thank you for joining us -- jeanine jones, thank you for joining us. next, we will talk to a man who has a ♪ ♪ create a season full of curiosity. your happiest spring starts at lowe's. care coalition, where are we on alaska airlines? we found that people are raving about their customer care. i mean, take a look at this! wow! [dog barks] says here they have the most flights from the west coast. they fly to chicago, hawaii, cancun! wow! do they fly to my magical faraway kingdom of care-a-lot, way up in the clouds where anything is possible? they have direct flights to vegas. close enough! ♪ ♪ about the weather, but we can play a role in helping stop climate change. ryan joining us now, he is the co-author of speed and scale, a book that has been called an action plan for our planet. thank you for being here. >> think you for having me. dion: let's talk about this plan. to get us to net zero emissions by 2050 and getting us halfway there by 2030, this sounds like an astronomical goal. >> it is an audacious one. if we started a lot earlier, this would be a

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jones, bbc news. our correspondent jenny hill is in moscow. good morning.s? what are you hearing there? the ukrainian civilians? what are you hearing there?— ukrainian civilians? what are you hearing there? the kremlin is doing what it is increasingly _ hearing there? the kremlin is doing what it is increasingly doing - hearing there? the kremlin is doing what it is increasingly doing when i what it is increasingly doing when it comes to responding to western accusations of war crimes. it says all of this is fake. with regard to the town of bucha, you'll have seen those terrible images purporting to show civilians killed in the streets, some with their hands bound behind their backs. authorities say not a single local residents suffered from any violent action, on the contrary, it says that russian troops actually delivered humanitarian aid to settlements around the city of macro—sunrise. the russian authorities are demanding an emergency meeting of the un security council to discuss what they say is ukrainian staging of these purported war crimes. it says