Geological Change Usually Takes Thousands Of Years

One Thing That Being A Scientist Has Taught Me Is That You Can Never Be Certain About Anything. You Never Know The Truth. You Can Only Approach It And Hope To Get A Bit Nearer To It Each Time. You Iterate Towards The Truth. You Don't Know It.

Our Future Is Like That Of The Passengers On A Small Pleasure Boat Sailing Quietly Above The Niagara Falls, Not Knowing That The Engines Are About To Fail.

I'm Not A Pessimist, Even Though I Do Think Awful Things Are Going To Happen.

By The End Of This Century, Climate Change Will Reduce The Human Population To A Few Breeding Pairs Surviving Near The Arctic.

Nasa Will Send Up A Big Sun Shade That Will Be In Orbit Between The Earth And Sun And Deflect 2 Or 3 Percent Of The Sunshine Back Into Space. It Would Be Cheaper Than The International Space Station.