Micropayments are great if you use them for a product or service with certain properties. It must be one where you can get away with usage-based pricing, and where there is a strong rationale for making it cheap, yet not free.

Suppose that every prospective parent in the world stopped having children naturally, and instead produced clones of themselves. What would the world be like in another 20 or 30 years? The answer is: much like today. Cloning would only copy the genetic aspects of people who are already here.

If you had a really good - battery, it wouldn't matter that the sun goes down at night and the wind stops blowing sometimes. But at the moment, battery technology is nowhere near good enough to use at utility scale.

Micropayments are great if you use them for a product or service with certain properties. It must be one where you can get away with usage-based pricing, and where there is a strong rationale for making it cheap, yet not free.

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

Many of the things the slow food people honor were innovations within historical times. Somebody had to be the first European to eat a tomato.

The world has shown that if you provide capital and expertise to an area that is starved for capital and expertise, really good things will happen.