glacier collapsing in alaska. captured by that kayaker. they say thad staey started hea crackling and the next thing they knew all of that came rushing at them. they survived in all of that. and it turns out in july, alaska is experiencing its warmest month ever according to government scientists and if this summer seemed hotter than usual, it's not your imagination. researchers say this july was actually the hottest month in recorded history all across the globe. while democrats are rolling out plans to address the climate crisis, some republican strategists fear the issue could be a republican vulnerability. joining me now is noaa climate scientist, deke, and asked republican strategist reena shaw to stick around once more to talk about all this. deke, i do want to start with you, why are the ice melts there in greenland so alarming? we talked about over the years but why now? >> so these things are connected to the global climate that you described earlier.