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When They Electrified Christmas

Cars That Think

Whether for religious or secular celebrations, the variety and functionality of lights have exploded in recent years, abetted by cheap and colorful LEDs and compact electronics. The earliest Christmas lights used miniature versions of Edison's pear-shaped carbon-filament bulbs, which had fragile exhaust tips that were prone to breaking.

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Perspective: Regional Greenhouse Gas Cap-and-Trade Programs May be the Solution

Green Car Congress

states (Illinois, Iowa, Kansas, Michigan, Minnesota, and Wisconsin) and one Canadian province (Manitoba). For offsets to be credible, a ton of CO 2 -equivalent emissions from an offset project should equate to a ton reduced from a covered emission source, such as a smokestack or exhaust pipe. Coverage: In 2012–50% of emissions.

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