If we had a hydrogen economy worldwide, every nation on earth could create its own energy source to support its economy, and the threat of war over diminishing resources would just evaporate. ↗
Then about 1951 I began writing again, painfully, a novel I called in the beginning A Life Sentence on Earth, but which developed into The Tree of Man. ↗
We don't need to clear the 4 to 6 percent of the Earth's surface remaining in tropical rain forests, with most of the animal and plant species living there. ↗
I will remember this day for the rest of my life. There is nothing you can say. It's just like you won the match after the earthquake and it just feels great. ↗