Share Share on Facebook Share on Twitter LinkedIn Email Fill a plastic bottle with water, add a small amount of bleach to keep it clean, stick a film canister over the cap to stop it corroding in the UV, stick it in your roof, and hey presto an everlasting prismatic 50W lightbulb! httpv://www.youtube.com/watch?v=_zMAWztZ6TI via http://www.inhabitat.com/2010/04/02/sundolier-robot-pumps-sunlight-indoors-for-powerful-daylighting/ and Slashdot energygreen building Related Posts 137 years of climate anomolies January 12, 2019 Monarch butterfly numbers fell by 86% last year alone January 8, 2019 Which fossil fuel companies are most responsible for climate change? November 11, 2014 Write A Comment Cancel Reply Save my name, email, and website in this browser for the next time I comment. This site uses Akismet to reduce spam. Learn how your comment data is processed.