Quote of the Day

In the 21st century, there is a real possibility of creating biological castes, with real biological differences between rich and poor. The end result could be speciation. We're used to being the only human species around, but there is no law of nature that says there can only be one species of human. With this kind of upgrading treatment we could have, in the not too distant future, more than one human species on Earth again.

- Yuval Noah Harari; his new book Sapiens: A Brief History of Humankind will be coming out February 2015