For the U.S. to have world-class high-speed trains, the government will have to subsidize them. The investment would be small compared to the billions lavished on highways and airports.
Scientists who argue for human-caused climate change published twice as many papers and are cited 64 percent more often than researchers who doubt climate change.
Claiming that our inbred propensity to war can be prevented by aggressively reducing the birth rate is a de facto declaration of war on the world's poor.