These 14 houses, pavilions, commercial buildings and other forms of architecture take inspiration from the shape and symbolism of trees.

Technology, biology and horticulture come together in an unusual interactive exhibit that invites visitors to help algae grow with their breath.

Western Australia's Hutt Lagoon is pink as a blushing bride and saltier than a sailor on shore leave, thanks to an abundance of beta carotene-producing algae.

Reclaiming random found objects for art is not a new thing, but these 13 artists use all sorts of waste materials in cool and surprising ways.

These compact, portable, prefab eco-friendly travel destinations seem too amazing to be real, like a UFO suite and a 'magic mountain' complete with waterfall.

Tinted by toxins and flushed of fish, the startling hues of these 10 ravaged rivers are red cards against those who mismanage these precious resources.