<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><base href="data:"><div style="font-family: Helvetica; font-size: 12px; color: black; text-align: left; ">Another possible (future) enhancement for the Underground Solar Greenhouse concept</div><div style="font-family: Helvetica; font-size: 12px; color: black; text-align: left; ">(to -- via RE -- supplement lighting: 1) during winter period, &/or 2) on dull days, &/or 3) if off solar south, &/or ...) ! </div><div style="font-family: Helvetica; font-size: 12px; color: black; text-align: left; "><br></div><a href="http://www.treehugger.com/files/2010/02/move-over-leds-scientists-fully-recyclable-lighting-material-graphene.php?campaign=daily_nl">http://www.treehugger.com/files/2010/02/move-over-leds-scientists-fully-recyclable-lighting-material-graphene.php?campaign=daily_nl</a><div style="font-family: Helvetica; font-size: 12px; color: black; text-align: left; "><br class="webkit-block-placeholder"></div></body></html>