You've probably seen the recycling logo stamped on plastic items, often with a number inside and letters underneath. This article explains their significance and includes a free plastics recycling cheat sheet for download!

With carbon dioxide emissions snaring most of the media attention in relation to global warming, it's easy to forget that there's other greenhouse gases too - some with the potential to trap more heat and for longer. Here's a look at some of the substances, where they come from and what we can do to minimize emissions.