Water: use it efficiently | Photo: Nemo Equipment

Water is a very precious resource. We drink water, we cook with water, we bathe in water and we clean with water. Learn how to conserve water efficiently in the kitchen, bath, laundry, outdoor and at work.

While one billion people suffer from water scarcity, we keep the water turned on while brushing our teeth. If we change our daily habits, we will change the planet for better.

There are limits to water supplies, and human activities are degrading them. Can we improve our track record without sacrificing the quality of life? For sure? When it comes to saving water, details matter.

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California: water is a precious resource | Photo: William Warby/Creative Commons

The California Governor Jerry Brown has backed up standards for water appliances which will save more than 10 billion gallons of water in the first year.

The state's four-year drought has forced drastic decisions. Over time, the water savings is estimated to reach 105 billion gallons per year, i.e., savings of more than three times the annual amount of water used by the City of San Francisco.

"People should realize we are in a new era. The idea of your nice little green lawn getting watered every day, those days are past," underlined Governor Jerry Brown.

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Ocean acidification: coral reefs are particularly sensible | Photo: NOAA/Creative Commons

Do you know what ocean acidification is? Learn why a surf session might become a dangerous or impossible activity in the future.

Oceans cover 70 percent of the earth's surface. When CO2 from the air is absorbed into seawater, it dissolves and becomes carbonic acid.

Over the last couple of centuries, the oceans have absorbed a quarter of the CO2 we've emitted and their average PH has dropped from 8.2 to 8.1, which means a 30 percent increase in acidity.

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