climate scientist michael mann speaks with correspondent miles benson. coming upup on "earth focus." >> we will have years like this more often than n not. and we've had that f for the last 5 years. >> and there just aren't enough sandbags to go around. still not enough sandbags to o go around. >> i haven't seen a winter like this in a really long time. or even maybe never.. >> we've been seeing sosome seve weatather. expect to see more. it's coming. hurricanes, floods, droughghtsraraging wildfirires, snowstorms, and tornadoes. is this purely nature, or are thehere manmadede, therefore controllable, factors at work?k? a warmer, moister environment can intensify storms, creating heavier precipitation. and this scientists say is why human activities may account, at least in part, for the rise in extreme weather we're e experiencing. >> the debate is settltled. climate change is a fact. and when our children's children look u us the eye andnd ask ife didd all we could to leave them a safer, more stable world with new sources of energy, i want us to be able

climat scientist michael mann is a central figure in that debate. he was one of the scientists behind the development of the controversial hockey stick chart, which showed how temperature in the late twentieth century was exceptionally warm compared to the previous 900 years. this triggered a tax on dr. mann and the science behind his work, all documented in his book "the hockey stick and the climate wars." michael mann, you write that in mid 1990s, scientisists were abe to begin to connenect the d dotn climate chchange. could d you elaborate? >> we underrstood the basic science of the greenhouse effect nearly two centuries ago. joseph fourier, the same e guy who discovered the law of heat conduction, understood that there was this greenhouse effect. so o we've known for soe time that the greenhouse effect exists and that we're increasing it through fossil fuel burning. by the mid 1990s, we had reached a level of formal certainly about that that we had not before reached. we could actually attach a number to it. in the second assessment report of th

collegete pennsylvania, we're joined by michael mann.is latest book he co-authored with political cartoonist to toles titled "the madhouse effect: how clime change denial is threatening our planet, destroying our politics, and driving us crazy." and video stream from south us,ca, kumi naidoo rejoins south african activist and the former head of greenpeace. he is chairperson of "africans rising for justice, peace and dignity." and outside of london asad , rehman, executive director of "war on want." and antonia juhasz is an oil and energy journalist. her latest piece is headlined, "paramilitary security tracked and targeted #nodapl activists as "jihadists," docs show." let's go to michael mann and your response to just what happened yesterday in the white house rose garden. >> thank you. it is good to be with you. what can be said that hasn't already been said. i thought you laid it out well. the u.s. through the actions of donald trump as an international outlaw. we literally are on the sidelines with syria and nicaragua is the only -- a

when you sat down with michael ma mann. was there something you were waiting for him to say that made you feel relieved that it got to the right person? >> michael say very early draft copy of the book, was so excited about it right from the beginning. and the things he liked about it were the things that i loved about the story. and that is, as you were describing, in his remarks, the fact that it built by person by person by person. it's not a traditional historical narrative where you have an omnicient historian telling you. it's moment by moment with people who were trapped in this fight and that's the thing that michael mann felt about the story. i've seen his movies and i think he's an amazing talent. he's made some great motion pictures and tv shows, and you know, and frankly, he's the kind of guy who can command the resources it takes to realistically portray something on this scale. i mean, i'm sure he'll want to go to vietnam to shoot. i'm sure this is going to be a series that will have many hundreds of actors in

one was michael mann and one was phil jones. they had rigged evidence of this through things that -- communications that were disclosed. they were actually rigging the science. and it was really -- they didn't pay much attention here in the united states. but i remember at the time that christopher booker of the u.k. telegraph -- that's one of the biggest communications operations there in the u.k. -- they called this the worst scientific scandal of our generation. that's climb gattgate. that -- owe climb patgate. that's cooking the books on science. the financial times, clyde kook said, the closed mindedness of these supposed men of science, their willingness to go to any lengths to defend a preconceived message is surprising even to me. the stink of intellectual corruption is overpowering. that is the science that has -- on which they have relied for a long period of time. so it's -- in fact, if you give an example of how the hockey stick -- that's what michael mann came up with -- trying to -- instead of what we're showing on

. >> michael mann joining us with his take on the paris accords.y with us here on msnbc. ♪ everything your family touches sticks with them. make sure the germs they bring home don't stick around. use clorox disinfecting products. because no one kills germs better than clorox. >>> welcome back, joininge now is michael mann, a climate scientist whose work was key in showing that the global temperatures have risen dramatically because of humans. if it is driving you crazy, let me get you to react to the contention from senator inhoff that science is still divided. >> we're still wback in this ma house. we thought we moved past it, but some of our most senior elected representatives still deny that climate change is even happening. i do note th respond to your ef to get him to comment on the fact that the three warmest years on record were all in the last three years. i took that as an indication that maybe he moved slightly beyond the outright denial of the science, but he is still denying the problem, he is denying the impact that climate change is h

we know is have an outside we're not familiar with destinations like for example very general michael mann's remake of miami vice yesterday that cigarette from miami yes or the event is that irish actor con farrel yeah this baby was hot baby so yeah i just. a nice babe in hollywood i rather like then just just the thought of having a co a mo hito enough gonna get them so hot. right down them up you're like wait a minute you know yeah i don't like one hundred twenty miles an hour as you go to it's dangerous you should keep your clothes on right exactly i mean you know i have as become a very hot destination for us americans but the problem is the average american travels the educated terms of the other destinations for example we have our darrow which is cuba's answer to can't khun base we have a lot of these resort towers there and all that have a place in the north central of the north central coast of cuba. which has been the most beautiful beaches anywhere in the caribbean well i guess that the average american is as no history there and fifty sixty hundred has never been in history there

you brought this guy in, michael mann. he was the same scientist discredited through climategate. that was something very, very significant at that time to have him come in and say things that just flat weren't true. now as far as the paris treaty, not the paris treaty but the paris agreement. i was glad he did that. if he didn't, there would always be people throughout, radicals, the far molest would sue thor government and i think that was the major reason. >> let's talk about jobs. they reported to this accord hurting jobs at home. they were relying on research that is not being upheld by the majority of people at least. and there is a concern that china will be able to take over and fill that hole when it comes the new technology, clean energy technology. are you concern that had americans are not going to have the same access to good clean energy jobs that will sustain themselves in the future by us not being a part of any sort of future negotiations on the world stage? and allowing china to fill that gap? >> the reason i'm not concerned is because it's not true. in 1992, we

one of the well-known climate fanatics named michaelman -- i remember -- michael mann -- paris was the 21st meeting that the united nations had. in 2009 that meeting was held in copenhagen. at that time i chaired the environment and public works committee. at that time we had a lady who was the -- was the director of the e.p.a. and i -- i --