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In a paradigm shift, Singapore has moved from a Garden City to a City in the Garden with a holistic programme to promote eco-tourism: The six Plants and Planet collection of gardens showcase the biodiversity of plant life on our planet: 1. Secret Life of Trees examines trees and their functions as well as their evolution. It also investigates the role of trees in the rainforest. 2. World of Palms celebrates the rich diversity of tropical palms and their ecological riches. Different shapes of fronds and seeds as well as the versatile use of palms will also be highlighted. 3. Understorey will feature the forest root zone and plant species of the forest floor. It offers information on how plants have adapted to the specific environments such as low light and poor soil condition, etc. 4. Fruits and flowers is about the amazing world of flowers and fruits and their functions. 5. Discovery garden looks at plants evolution throughout the lifespan of the planet and offers vi...

As the turbines spin, clean renewable energy will flow into the power grid. In short, it's an interesting mix of the best of both solar and wind power; but unlike solar and wind, the mechanical energy created by Davey’s machine allows the unit to operate 24/7. As for cost, the project has a $750 million price tag. According to a 2005 industry report, this would imply about 10 cents per kilowatt-hour, which is roughly one-third the cost of electricity from current solar cells and almost half of the cost from nuclear power. Financial models suggest the tower will pay for itself in 11 years; engineers believe the tower will have a life span of 80 years. Once it’s built, Davey’s tower can be expected to produce power with virtually no maintenance. Better yet, it requires no "feed stock" — nothing but air and sunlight spin the turbines...Instead, hot air rushes out of the huge, towering mouth of Davey's creation — enough hot air, in fact, to turn a massive turbin...