Lloyd Alter is Design Editor for Treehugger and teaches Sustainable Design at Ryerson University in Toronto. Alternating tread stairs are terrific for saving space; you only put one foot on a tread at ...

Staircases can seem like an unalterable part of a building’s DNA. Whether part of a new build or a refurbishment, it can be difficult to imagine changing the angle, direction, or even the placement of ...

With so many types and styles to choose from, the best stair treads can be difficult to narrow down. Of course, most top-selling sets are nonslip and nice to look at — but how do you find the ideal ...