The design of Populus is, by its nature ... The eye-shaped windows, inspired by the scars left when branches fall off aspen trees, are functional, with lids that shade the building.

[Dylan Martinez/Reuters] Poplar trees next to Sefton Park Allotments in Liverpool cast long shadows in the evening sun. [Adam Vaughan/EPA-EFE] Academy Awards host Conan O'Brien pushes the rolled ...

Populus, which opened in October, strives to be the first carbon-positive hotel. It’s made to look like an aspen tree, which you may have noticed in the Central Business District. However ...