Have you noticed this uniquely designed hotel popping up on your social feeds? That’s because the Populus had its grand opening in Denver earlier this week. What some may mistake as singing mouths was actually designed by @studiogang to resemble an aspen tree from the inside out. But, that’s not the full story. Populus is the first carbon-positive hotel in the United States which used low-carbon concrete mixes, high-recycled materials, and more during construction, and is offsetting its long-ter