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    Trial is 'taking its toll': Trump booed and heckled at Libertarian National Convention

    08:37
  • China targeting Taiwan's semiconductor industry could 'cripple' the world's economy

    07:53
  • Israeli war cabinet leaders breaking with Bibi would be ‘a qualitative measure, not quantitative’

    05:23
  • Rep. Himes: Bibi should focus on ‘freeing the hostages,’ not Johnson’s ‘naked political interest’

    06:11
  • Janai Nelson: Clarence Thomas ‘took the seat’ of Thurgood Marshall, ‘but he did not fill it’

    07:10
  • ‘Such a chaotic, dangerous time’ in the Middle East amid Israel-Hamas war and death of Raisi

    05:34
  • Provocative flag flown at Justice Alito’s home show he ‘is in no way impartial’: Rep. Sherrill

    04:36
  • ‘Completely inappropriate’: Sen. Coons reacts to controversial flag flown at Justice Alito’s home

    09:49
  • Biden campaign thinks abortion rights issue 'will be good for them' in presidential election

    06:30
  • Iran 'really wants to avoid confrontation with U.S.': How death of Raisi could shake up Middle East

    06:56
  • 'Hope is mandatory': Hersh Goldberg-Polin's parents speak out as hostage deal is at a standstill

    06:35
  • Veepstakes at the courthouse? Trump allies attend criminal trial

    07:25
  • 'An extraordinary collapse': What Andrea Mitchell saw inside the courtroom at Trump's trial

    03:46
  • ‘Complete opposite’ of the Michael Cohen we know: What Chris Jansing saw inside the courthouse

    07:18
  • ‘Dangerous territory’: Trump lawyer questions Michael Cohen over prior convictions

    05:43
  • ‘The real number of dead hostages is likely to be significantly higher': Raf Sanchez

    04:33
  • Alito flag incident is ‘different from Ginni Thomas,’ as ‘it’s not just his wife’s house’

    07:37
  • Jeh Johnson: ‘May be some noise’ but Biden will get ‘a very respectful reception’ at Morehouse

    07:07
  • ‘Unflappable’: Michael Cohen appears unfazed by Todd Blanche’s cross-examination

    07:53
  • Katy Tur: Presence of Trump allies adds ‘mean girl quality’ to the courtroom

    09:53

‘It’s not off in the future. It’s here’: How climate change is driving record-breaking extreme heat

04:33

Millions of Americans continue to be impacted by extreme summer heat, with regions of the country experiencing prolonged periods of temperatures over 100 degrees. Climatologist Michael Mann joins Andrea Mitchell to discuss the causes of the record-breaking weather and the role climate change plays. “There's a little bit of extra juice because of an El Niño event, a natural warming in the Pacific that elevates global temperatures a little bit. But that's on top of this rising tide of warming from carbon pollution from the ongoing burning of fossil fuels, and those two things are now combining to give us truly unprecedented extreme weather events,” Mann tells Andrea. “Not just the heat domes, the heat waves, but the wildfires, the floods, the super storms. This is climate change. It's not off in the future. It's here, and we need to determine what we're going to do about it.”