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 ...

Not only can you possibly slip off the side and cut a gash in your face on these crazy tread stairs, you could slip and fall crotch first onto the middle bar. Very useful for keeping fatties off the ...

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Whether you’re trying to save space or ward off witches, these stairs will apparently do the trick. A popular misconception has social media users apparently believing that a house for sale in ...

An alternating-tread staircase doubles as storage cupboards in this tiny Paris apartment by French architects Schemaa (+ slideshow). Schemaa had to maximise space in the small apartment, so combined ...

How can you add space to a modest-sized house that's already had two additions? That was the question Marty Berens faced with the Shakopee rambler where he and his family have lived for about 15 years ...

Why would someone design a staircase like this? As part of a concerted effort to upgrade the workshop, I've made my ...

Once upon a time, the TikTok community was shook to their core after a video of “witches stairs” went viral on the app. If you’re not familiar with the term, no worries because over the years, these ...