In twenty years, decentralized and renewable energy sources will be firmly entrenched as a viable alternative.
An engine powered by evaporation is made from bacterial spores that can lift more than 50 times their own weight.
Electricity from the gadget is stored in batteries that can be detached and used around the house.
From underwater hotels and igloos to tents suspended in the air, these hotels are bound to provide an unforgettable experience.
The advance could one day make solar power generation in space a possibility.
The lagoon would feature 90 turbines within a 14-mile breakwater and generate between 1,800 and 2,800 megawatts.
Alternative power, from sunlight to human muscle tops out this week's gallery.
Hydrogen, the most common element in the universe, is taking big steps forward as a clean fuel source. Here are some facts about the ubiquitous gas.
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