Comments on: How to build a solar wall oven? Wed, 21 Aug 2013 10:45:36 -0500 hourly 1 By: green expert Sat, 07 Nov 2009 19:15:49 +0000 The Professional Green Network(PGN) is an affordable source to help you learn, live, and be green in your homes and businesses. Our mission is to educate, inform, support, and train those who want to learn about green, become more eco-friendly, and be a part of green opportunities economically and with commitment that respect the environment.