The Japanese government has launched a campaign encouraging people to go to bed and get up extra early in order to reduce household carbon dioxide emissions¹.

日本政府日前发起一项宣传活动，鼓励人们早睡早起，以减少家庭的二氧化碳排放量。

The Morning Challenge campaign, unveiled by the Environment Ministry², is based on the premise（在……前提下） that swapping³（交换，调动） late night electricity for an extra hour of morning sunlight could significantly cut the nation's carbon footprint.

A typical family can reduce its carbon dioxide footprint by 85kg a year if everyone goes to bed and gets up one hour earlier, according to the campaign.

The amount of carbon dioxide emissions potentially saved from going to bed an hour early was the equivalent（等价的，想等的） of 20 percent of annual emissions from household lights, "Many Japanese people waste electric power at night time, for example by watching TV until very late," a ministry spokesperson told The Daily Telegraph.

"But going to bed early and getting up early can avoid wasting electrical power which causes carbon dioxide emissions. If people change their lifestyle, we can save energy and reduce emissions." The campaign also proposes that people take advantage of an extra hour of morning sunlight by improving their lifestyles in general by running, doing yoga and eating a nutritious⁴（有营养的） breakfast.

It is the latest initiative tackling climate change by the Japanese environment ministry, which is faced with the challenge of reducing carbon dioxide emissions by 25 per cent from 1990 levels within the next decade.

It was the same government department that launched the high profile Cool Biz campaign five years ago, which encourages workers to wear short-sleeved shirts and offices not to turn air con⁵ lower than 28 degrees during the summer.