The annual action since 2007 which spends the World fund of the wild nature urges to refuse electricity use on March, 26th from 20-30 till 21-30 o'clock. This hour the Earth in the past, 2010, has spent more than 1600 cities from 108 countries. The action in Moldova will allow to save 280 thousand in kw of the electric power for which manufacture 87 thousand cubic metre of gas is spent. Gas burning leads to emission 165 tone of hotbed gases. The first country where have spent «Hour of the Earth» was Australia. In many cities light on history and architecture monuments was switched off. The minister of environment George Shalaru has urged inhabitants of Moldova to support the World fund of the wild nature and to improve local ecology. By the way the action warms up interest of the population to environmental problems.