1. With simple materials found around the house, you too can conduct an experiment to see what has happened to the economy.

    # vimeo.com/6803752 Uploaded 58.8K Plays 14 Comments
  2. The rapid rise in the world's population to 7 billion -- from 6 billion a dozen years ago -- poses enormous challenges. In this video, Earth Institute Director Jeffrey D. Sachs talks about the stresses our population already puts on the planet, and the mission of the institute to tackle those problems and promote sustainable development.
    Also available on YouTube: youtu.be/QqQbf7NdaOI

    # vimeo.com/30393721 Uploaded 4,631 Plays 0 Comments


Keisuke Kamiya

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