eVolo Skyscrapers ; 2: 150 new projects redefine building high This publication is the follow up to the highly acclaimed book eVolo Skyscrapers. 150 new skyscrapers submitted to the eVolo Skyscraper Competition are categorized and examined. These super tall structures take into consideration the advances in technology the exploration of sustainable systems and the establishment of new urban and architectural methods to solve economic social and cultural problems of the contemporary city; including the scarcity of natural resources and infrastructure and the exponential increase of inhabitants pollution economic division and unplanned urban sprawl