What stops population growth?

This is what I understand for a long time about population growth. It's just that this video explains it visually very clearly.

What stops population growth? from Gapminder Foundation on Vimeo.

Ruby on Rails 3.0 is released

Rails 3.0: It's ready!

Ruby on Rails 3.0 Release Candidate 2 is released

It's getting closer to the final release.

Rails 3.0: Release candidate 2

How we found hundreds of potential Earth-like planets

Ruby 1.9.2 is released

Ruby 1.9.2 was released two days ago.
I don't know why I missed it for two days...

Population growth and sustainability

It was amazing.

Jason Clay: How big brands can help save biodiversity

A monkey economy as irrational as ours

It was interesting.