What has become clear from the science is that we cannot burn all of the fossil fuels without creating a very different planet.
James HansenIn view of the immense power of natural weather and climate fluctuations and the great buffering capacity of the Earth, especially the ocean, it is easy to be skeptical about whether small anthropogenic changes of atmospheric composition can have important practical impacts.
James HansenGlobal warming has already triggered a sea level rise that could reach from 6 metres (19.69 ft) to 25 metres (27.34 yards).
James HansenBurning all the fossil fuels will destroy the planet we know, Creation, the planet of stable climate in which civilization developed.
James Hansen