The inertia of humans is so huge that you can't really do anything meaningful.

Climatologists are all agreed that we'd be lucky to see the end of this century without the world being a totally different place, and being 8 or 9 degrees hotter on average.

The entire range of living matter on Earth from whales to viruses and from oaks to algae could be regarded as constituting a single living entity capable of maintaining the Earth's atmosphere to suit its overall needs and endowed with faculties and powers far beyond those of its constituent parts.

Only nuclear power can now halt global warming.

Let's make hay while it lasts.

If it hadn't been for the Cold War, neither Russia nor America would have been sending people into space.

There is little evidence that our individual intelligence has improved through recorded history.