Can gadgets and biology converge?

    Many nations still rely heavily on coal, oil and natural gas to supply most of their energy needs. But this dependance on fossil fuels presents a great problem. Fossil fuels are a finite resource. Eventually, the world will run out of fossil fuels, or it...

Hydrogen is the most common element on Earth—for example, water is two-thirds hydrogen—but in nature it is always found in combination with other elements.

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