If you don’t have electricity or live in a home with no windows, it’s going to be dark inside, even during a sunny day. Luckily, a bottled liter of water with some bleach can provide approximately 55-60 watts of light from the sun. This simple idea has helped many dwellers in the light-deprived slums of the Philippines. “A Liter of Light” is a sustainable lighting project by Illac Diaz which aims to bring the eco-friendly Solar Bottle Light to disprivileged communities worldwide.
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Its solution, called the Hydrolemic system, involves both harvesting more moisture from the air than our current un-modified bodies are capable of, and also doing more to retain the water we have. The company imagines that system would require us to drink .1 cups of water a day.
If you ever fly over San Francisco Bay, be sure to peer out of the window to catch a glimpse of one of the world’s most incredibly coloured landscapes - the salt evaporation ponds operated by Cargill, Inc.
Salt evaporation ponds are shallow artificial ponds designed to produce salts from sea water or other brines. The seawater or brine is fed into large ponds and water is drawn out through natural evaporation which allows the salt to be subsequently harvested. During the five years it takes for the bay water to mature into salt brine, it is moved from one evaporation pond to another. In the final stages, when the brine is fully saturated, it is pumped to the crystalizer where a bed of salt 5 to 8 inches thick is ready for harvest.
Salt ponds range from blue green to deep magenta – colored naturally by the microorganisms that thrive as salinity levels increase. The color indicates the salinity of the ponds and the type of microorganisms that’s breeding on it. Three microorganisms in particular, Synechococcus, Halobacteria, and Dunaliella, influence the color of salt ponds.
We’ve become a nation of hypochondriacs. Every sneeze is swine flu, every headache a tumor. And at great expense, we deliver fantastically prompt, thorough and largely unnecessary care. There is tremendous financial pressure on physicians to keep patients happy. But unlike business, in medicine…