Wooden skyscrapers, the latest architecture revolution

The manufacture of concrete and steel emits planet-warming carbon dioxide, while wood absorbs carbon, cleaning the air.

Architects from around the world are meeting in Las Vegas at the American Institute of Architects conference to discuss the latest trends in design and form.

This year’s theme is Blueprint for a Better Future, and it seems wood may play a big role.

Al Jazeera’s John Hendren reports.