Science 2.0. Not an easy thing. Light watch online

Science 2.0.  Not an easy thing.  Light watch online
The role in the life of each bulb just hard to assess. Each becomes feeble, when suddenly the house lost electricity. It is understood that before the light bulbs in our life, people sleep on average about 10 hours a day, and after that — at least half 7.

Science 2.0 — a serial

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