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Unintended consequences can be grouped into three types: Unexpected benefit: A positive unexpected benefit (also referred to as luck, serendipity or a windfall). Unexpected drawback: An unexpected detriment occurring in addition to the desired effect of the policy (e.g., while irrigation schemes provide people with water for agriculture, they can increase waterborne diseases that have devastating health effects, such as schistosomiasis). Perverse result: A perverse effect contrary to what was originally intended (when an intended solution makes a problem worse). This is sometimes referred to as 'backfire'.

Robert K. Merton listed five possible causes of unanticipated consequences in 1936:[13] Ignorance, making it impossible to anticipate everything, thereby leading to incomplete analysis Errors in analysis of the problem or following habits that worked in the past but may not apply to the current situation Immediate interests overriding long-term interests Basic values which may require or prohibit certain actions even if the long-term result might be unfavorable (these long-term consequences may eventually cause changes in basic values) Self-defeating prophecy, or, the fear of some consequence which drives people to find solutions before the problem occurs, thus the non-occurrence of the problem is not anticipated

JUST ADD WATERGrowing your own veggies may become possible even for urbanites with tiny studio apartments.Israeli startup Living Box offers a modular, unfoldable, solar-powered little greenhouse that you can use to harvest anything from tomatoes to tea and herbs.“We have a slow release water system for irrigation, with a novel liquid nutrient solution and bacteria to avoid the use of pesticides, as well as an app prototype updating weather conditions and other relevant data right to your smartphone, so you don’t have to monitor it,” explained Nitzan Solan, CEO of the company.The idea was to create a sustainable, affordable and simple mobile farming system that could be operated by anyone around the globe.As of now, Living Box is testing in 50 sites around Israel, the U.S. and Nigeria, and aims to try locations in Spain and Fiji. It is expected to carry a market price of $300.

Faisal Mohammed Al Shimmari farms in some of the most extreme conditions in the world, at Al Ain, an oasis in the United Arab Emirates desert, where temperatures can reach 50C. "It's expensive as we have to buy water regularly to irrigate these plants," he says

Norwegian scientist Kristian Morten Olesen has patented a process to mix nano-particles of clay with water and bind them to sand particles to condition desert soil - he has been working on Liquid Nanoclay (LNC) since 2005."The treatment gives sand particles a clay coating which completely changes their physical properties and allows them to bind with water," he says.

"I am amazed to see the success of LNC," says Faisal. "It just saved consumption of water by more than 50%, it means now I can double the green cover with the same water."