Rising level of concentrations of carbon dioxide in the air
'The problem is simply stated: the power of the fossil fuel companies is too great. Among those who seek and obtain high office are people characterised by a complete absence of empathy or scruples, who will take money or instructions from any corporation or billionaire who offers them, and then defend those interests against the current and future prospects of humanity.
'This new climate milestone reflects a profound failure of politics, in which democracy has quietly been supplanted by plutocracy. Without a widespread reform of campaign finance, lobbying and influence-peddling and the systematic corruption they promote, our chances of preventing climate breakdown are close to zero.
'So here stands our political class at a waystation along the road of idiocy, apparently determined only to complete the journey.'