The building sector is the single largest consumer of energy and producer of greenhouse gas emissions.
Architects, designers and builders around the world are racing to reduce the carbon emitted by the buildings where we live and work.
We talk about how we build our shelter, from homes to office buildings, is part of the problem but could become part of the solution.
Brenda Ekwurzel, senior climate scientist at the Union of Concerned Scientists
Edward Mazria, founder and CEO of Architecture 2030
Joshua Rhodes, research associate at the University of Texas at Austin