The first thing that is not obvious to people is global warming is a less-than-1% effect. It's like being shortchanged at the bank by a penny every dollar. Over a long period of time with lots of transactions, that piles up.

For relatively modest amounts of sulfur dioxide injected into the atmosphere, you could easily cool Earth by 1% or more, if you want.

Chefs think about what it's like to make food. Being a scientist in the kitchen is about asking why something works, and how it works.

Ultimately, my Ph.D. is in mathematical physics, focusing on quantum field theory and curved space-time, and I worked with Stephen Hawking.

Technological 'revolutions' don't really overthrow anything - they simply append a new and dynamic market to that which went before.

The prize for ultimate inefficiency goes to America. We have built in so many checks and balances that our 'leaders' are the most thoroughly hogtied of any on Earth.

It is better to predict dramatic things that don't happen than boring things that do.