1)Global surface temperatures during the three years from 2014 to 2016 – each hotter than the last – boosted the total level of global warming since 1900 by 25%, according to new research.
2)A separate study has confirmed that heat extremes, too, have outpaced the global average. Maximum temperatures during the hottest heat waves have in the last 30 years risen three times faster – especially in crowded cities that are home to more than 10 million – than average temperatures as a whole.
3)And a third study warns that unless the world’s nations start to reduce carbon emissions, then within the next 17 or 18 years, planetary temperatures will be at least 1.5°C above the world average for most of human history.
And 35 to 41 years from now, these temperatures will have climbed 2°C above the level that held before the Industrial Revolution, and the arrival of fossil fuels as a global energy source.