Does “traveling” through time save energy? Is that lost hour of spring sleep really worth it? Where are the savings in Daylight Saving Time and would the Western world be better off dropping the whole thing and moving on with its life?
A (Very) Brief History of DST

In 1784, after noticing how many residents slept through [...]

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Usually, Li-Ion batteries have carbon (graphite) electrodes, and the performance that we already know, which is not good enough for our cars at this moment. Georgia Institute of Technology researchers developed a new, high-performance anode based on a silicon-carbon nanocomposite material that could well improve the usability of Li-Ion batteries.

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Sanyo, a giant Japan-based company has opened two solar parking lots in Tokyo. These solar-powered panels can charge about 100 electric hybrid bicycles. Using lithium-ion batteries, the system has enough power left over to also illuminate the parking lot with LED lights at night.

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