For years I have wondered: Why, if we can measure our fitness, or how many steps we are taking and thus get a measure of our overall health, why can’t we do the same with the environment? Why can’
Back in October <a target="_blank" href="http://www.changers.com/">Changers</a> appeared offering a solar powered gadget-<a href="https://techcrunch.com/2011/10/20/changers-launches-mobile-social-sola