Spring is a great time to think about a great environmental principle, reducing, reusing and recycling. Lots of people are using yard give-aways as an opportunity to recycle things they do not need. Only an ad on Craigslist or some other social media can have people flocking to our house for free things. But cleaning also takes planning, deciding how to sort the things you no longer need. People who are experts in such things recommend the four-box method of sorting, picking one for things to keep, one forthings to throw away and the otehrs to sell or give away. But the key is discipline.