Dear Pablo: I had a home energy audit done and they recommended insulating my pipes. The estimated cost was quite high and I wonder, is it really worth it?
Dear Pablo: I have a tough one for you: shall we recycle our paper? There are both the CO2 and the chemical aspects to consider, and there's arguments against recycling paper in each case.
What's Better, A Lifetime of Phone Books or a Lifetime of iPhones? 
Dear Pablo: I have been seeing a lot of advertisements claiming that soda makers are better for the environment. Are these claims really true? 
Dear Pablo: I had a home energy audit done and they recommended insulating my pipes. The estimated cost was quite high and I wonder, is it really worth it? 
Dear Pablo: I have a tough one for you: shall we recycle our paper? There are both the CO2 and the chemical aspects to consider, and there's arguments against recycling paper in each case. 
Dear Pablo: I don't like fake Christmas trees but I can't help but wonder if I did the right thing by cutting down a Christmas tree this year? 