Jason F. McLennan advances the world’s most audacious environmental standards and leads mission to provide super-sustainable buildings to the needy.

Partners Jason F. McLennan, Dale R. Duncan and Thomas J. Knittel think life is about give and take.

In February, the repair work following the powerful earthquake five years ago passed its first serious stress test.

Denver in early March unveiled an ambitious plan to upgrade its sprawling downtown performing-arts complex.

Promulgators of the Living Building Challenge, acknowledged as the most demanding certification program for the production of ultragreen buildings, are on a campaign to scale up the size of the projects that register for the rigorous net-zero annual energy- and water-use performance categories.

Like modern chefs tweaking classic techniques, concrete industry insiders are experimenting anew with ingredients—additives and aggregates such as fly ash, slag and quarry waste—and “plating,” which includes methods such as two-lift paving and real-time smoothness monitoring.