4 years to rescue Earth
Barack Obama has just 4 years to reverse global warming or face dire consequences a leading Nasa scientist and climate expert Jim Hansen warns.
The time to act is now, of course it is. The longer we avoid the issue and wait for it to get more severe – the odds are expotentially stacking against an ability to revert very long term trends we are now causing.
The huge innovation required to generate electricity and employ it for transport – and to do this without harming our home, Earth – that is the challenge.
