California’s energy future: Aggressive efficiency and electrification needed to cut emissions


In the next 40 years, California’s population is expected to surge from 37 million to 55 million and the demand for energy is expected to double. Given those daunting numbers, can California really reduce its…

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How to learn a star’s true age


Related images(click to enlarge) For many movie stars, their age is a well-kept secret. In space, the same is true of the actual stars. Like our Sun, most stars look almost the same for most…

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