13 Jun '11, 4pm

Do Living Walls Really Contribute to Clean Air? Apparently, Yes

Do Living Walls Really Contribute to Clean Air? Apparently, Yes

Irrigation controllers never constantly run. All irrigation controllers run on very low power in-between watering events just to keep their clock and schedule running. Think of it like a DVD player with a clock on the face, it only really uses power when it's playing a DVD, the power required to see the digital clock in between uses is very very little. The only energy used during the down-time is a small amount of energy drawn to run the computer real time clock (RTC) that is on the circuit board of the controller and some further energy required to power the circuits for the alarm monitors. When the controller is not actuating valves, it uses 50mA @ 5V, 365 days a year, 24 hours a day. When the RTC actuates a watering event (once a week for 1 hour for this wall), the irrigation controller then draws further power to physically open the water valves on the wall (which hav...

Full article: http://www.treehugger.com/files/2011/06/do-living-walls-r...

Tweets

Really, KFC? REALLY?!

Really, KFC? REALLY?!

grist.org 14 Jun '11, 3pm

I honestly didn't believe this one was for real at first. No way even KFC, purveyors of a sandwich that uses fried meat as...

WILL ABUNDANT NATURAL GAS MUSCLE OUT CLEAN RENE...

green-energy-news.com 14 Jun '11, 2am

June 13, 2011 – Vol.16 No.13 WILL ABUNDANT NATURAL GAS MUSCLE OUT CLEAN RENEWABLES? by Bruce Mulliken, Green Energy News T...