A skyscraper that processes waste, an ice dam, an urban nature reserve and a border-wall building are among the conceptual projects recognised in this year's eVolo Skyscraper Competition. More about Vertical waste processor wins conceptual skyscraper contest
This foldable skyscraper concept was designed by Polish architects to offer relief in remote disaster zones, and has been named the winner of this year's eVolo Skyscraper Competition. More about Collapsable skyscraper for disaster zones wins conceptual design competition
A conceptual scheme by a team of South Korean designers calls for inserting towers within the hollowed-out trunks of giant sequoias in the western US. More about Skyscraper competition proposal involves erecting towers within world's largest trees
Polish designers Pawel Lipiński and Mateusz Frankowski have envisioned a conceptual high-rise building that would act as a vertical farm, able to be disassembled and moved to different locations across sub-Saharan Africa. More about Modular farm tower for sites across Africa wins international skyscraper competition
Opinion: a proposal to surround New York's Central Park with a giant "sidescraper" epitomises architects' disregard for designed landscapes, says president of The Cultural Landscape Foundation, Charles A Birnbaum. More about "Disparity in the values assigned to architecture and landscape architecture continues"
US designers Yitan Sun and Jianshi Wu have proposed transforming Manhattan's Central Park into a sunken landscape encircled by a below-grade megastructure with office, housing, retail and cultural space. More about Sunken "sidescraper" bordering New York's Central Park wins skyscraper competition
This conceptual airborne structure is designed to absorb moisture from clouds and transport it to arid regions where it would be released as artificial rain to combat future environmental disasters. More about Cloud Capture is an imaginary flying machine for bringing rain to the desert
A vision for a skyscraper containing swamps, mountains, glaciers and a jungle has been named the winner in a competition to come up with futuristic ideas for high-rise living. More about Conceptual high-rise containing 11 landscapes wins eVolo Skyscraper Competition
News: a conceptual proposal for huge buoyant umbrellas that rebuild polar ice caps has been awarded first prize in this year's eVolo Skyscraper Competition. More about Polar ice cap-building umbrella wins eVolo Skyscraper Competition 2013
This conceptual skyscraper by Brazilian architects Projeto Coletivo would be constructed using rubbish in the city of São Paulo. More about Scrap Skyscraper by Projeto Coletivo