As a result of the carbon-dioxide enrichment of the Earth's atmosphere, plants are now growing faster. Furthermore, global warming lengthens the growing season and increases net rainfall.

I grew up in the 1960s and wanted to become part of the great space exploration effort, but when I graduated from college in 1974, the Apollo program was over, and the country had moved into this pessimistic mode. We had entered the 'age of limits.'

People make their own fates, and if enough of us make our fate to be space explorers, perhaps we can actually get some space exploration done.

In what was called the second siege of Leningrad, thousands died, but Putin and his partners in crime got rich. Then Putin killed even more Russians when he had the FSB explode bombs in apartment buildings in Moscow in 1999 to give himself the pretext to seize dictatorial powers.

George Orwell's science-fiction classic 'Nineteen Eighty-Four' wasn't a failure because the future it predicted failed to come to pass. Rather, it was a resounding success because it helped us prevent that future.

The process of my transformation came to a head with my discovery of St. Francis of Assisi during a pilgrimage I went on with a scout troop from my school.

Science is telling us that the reason people die is not because some god said so or because the laws of nature mandate it. People always die because of technical problems. And every technical problem has, in principle, a technical solution.

From the age of 11, I was cleaning floors, washing dishes, making sandwiches and being a cashier. Survival was the name of the game. Life was so hard that I had to struggle to keep up my standards. Under these conditions, I didn't think about science too much.