James Hansen - We conclude that Earth in the warmest interglacial periods was less than 1°C warmer than in the Holocene and that goals of limiting human-made warming to 2°C and CO2 to 450 ppm are prescriptions for disaster.
Rapid reduction of fossil fuel emissions is required for humanity to succeed in preserving a planet resembling the one on which civilization developed.
Milton Caplan - Following the fourth anniversary of the Fukushima accident, it is good to see there is less emphasis on the nuclear accident and more discussion of the significant natural disaster – the tsunami and earthquake that killed some 20,000 and destroyed so much, leaving 300,000 homeless. It is now clear that the nuclear accident will not be a cause for radiation-induced cancer, food is not contaminated, and most people can return to their homes should they so desire.
On the other hand, in Germany a decision to shut down some nuclear units in 2011 immediately following the Fukushima accident and to close the rest by 2022 has led to a large new build construction program of lignite-fired units to meet short term energy needs. With several under construction and some now in operation, coal is producing about half of Germany’s electricity.
Will Boisvert - Four years after the Fukushima nuclear accident, which catalyzed fears around cancer epidemics and large radioactive exclusion zones, it’s time to take stock of the scientific consensus on the health effects of the reactor meltdown. Increased scanning for thyroid cancer found that cancer rates were in fact lower for children in Fukushima than in other parts of Japan.
Ted Nordhaus & Michael Shellenberger - Nuclear energy today is broadly recognized by scientists, scholars, and analysts as an environmentally positive technology with risks, such as they are, overwhelmingly outweighed by its environmental benefits. Such is the consensus on this question that mainstream environmental leaders no longer attempt to contest it.