Dave Spencer 

@ecodave
My wife and I own the EchoHaven House, one of the CMHC EQuilibrium homes. It is the first ILFI certified netzero house in Canada. I am a semi retired landscape architect and planner. I planned and developed the EchoHaven community in Calgary
See followers
Carbon Upfront!
by Lloyd Alter
The Honeycomb
by Benjamin Ramm
Letters from an American
by Heather Cox Richardson
Talking Climate with Katharine Hayhoe
by Katharine Hayhoe
Volts
by David Roberts