By increasing or lessening the hours of darkness in each day, the scientists have been able to turn plant growth off and on like an electric switch.

用增加和减少每天黑暗小时数的方法，科学家已经能够控制植物生长，如同控制一个电器开关。

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Q: What is your best advice for those who see the film and are inspired to make the switch to a plant-based diet for the first time?

问：对于那些看了这部电影并受到启发要首次切换到植物性饮食的人们，你的最佳建议是什么？

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It calls for Xcel Energy to close four coal-fired units in the region, switch another to natural gas and build a gas-fired plant to help meet federal clean-air standards.

要求埃克·西尔能源公司关掉这个地区的四个燃煤发电机组，把另一个燃煤机组更换为燃气机组，并新建一个燃气发电厂，以符合联邦的清洁能源标准。

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Enterprises are being pressed to change over from coal to cleaner-burning natural gas and methane, and to be more energy-efficient by modernizing their plant equipment in the switch.

FORBES: Pollution And Prosperity

Evolution has arranged financing for methane-capture equipment in Argentina and for a switch by a 120-megawatt power plant in Hungary from coal to biomass fuel.

FORBES: Selling the Blue Sky

"It's not our long-term solution because of the competition with feed, and fuel competition, but it is prompting us to put into place a refueling infrastructure that could be used with cellulosic ethanol, " made from other types of plant material such as timber waste or switch grass.

CNN: Ethanol: Is it friend or foe?