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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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Urban transport | Two wheels good | The Economist

Tony Karrer Delicious EVdriven

Like electric cars, electric bicycles are classified as zero-emission vehicles, meaning they emit no exhaust gases. Recharging a battery can take 5-8 hours, but costs only a few cents a day. Every big carmaker seems to be developing one, and governments are vying with each other to support them.