Water75
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Top misconceptions about El Niño and La Niña
Forecasts by the International Research Institute for Climate and Society and other institutions show that a weak El Niño has developed in the equatorial Pacific, and is likely to continue evolving with warmer-than-normal conditions persisting there until early 2010. What exactly is this important climate phenomenon and why should society care about it? Who will…
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Abrupt Climate Change in a Warming World
Early last month, I attended a meeting on Abrupt Climate Change in a Warming World. Climate Matters @ Columbia has discussed abrupt climate change before, referring to the hydrologic cycle, and with regards to melting sea ice or permafrost. Shifts in the earth climate are a known fact: crocodile-like reptiles lived in Greenland 55 million…
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Hawaii’ s homes go Green with solar hot water heaters
The grass may be greener in Hawaii, but now so are its houses. Solar powered hot water heaters are now replacing electric heaters that burn fossil fuels, and in the process release harmful carbon and other greenhouse gas emissions that contribute to global warming. Hawaiian Electric Company is heavily encouraging all home owners to convert…
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Punjab: A tale of prosperity and decline
The state of Punjab, located in the northwest part of the country, is known as the breadbasket of India. Punjab produces 20% of the nation’s wheat, 11% of its rice, and 11% of its cotton, from only 1.5% of its geographical area. Punjab is in trouble, however; groundwater is rapidly decreasing. Water levels have dropped…
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Water Harvesting Making a Comeback
In the American Southwest, water is a valuable resource that is almost always in short supply. Yet, despite the frequent discrepancy between supply and demand, homeowners and municipal managers alike have been obligated – by law – to let the rain that runs off of their roof or falls in their jurisdiction to go its…
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Fourth of July fireworks: water contaminants?
Fourth of July fireworks across the United States are definitely a long tradition that millions of people eagerly wait and enjoy. The concern is that fireworks traditionally have included potassium perchlorate as the oxidizer, a material that provides the oxygen that fireworks need to burn and that perchlorate is an environmental pollutant with potential adverse…
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Reclaimed Water: Safe to Drink?
People often cringe at the thought of water that was once wastewater being treated and used as drinking water. However, in Tampa, Florida, voters will be deciding next year on whether to use reclaimed water as part of the city’s drinking water. Reclaimed water, also known as recycled water, is highly treated wastewater that is…
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U.S., Canada, re-opening negotiations on Great Lakes water quality
On Saturday, June 13, 2009, Secretary of State Hillary Clinton met with her Canadian counterpart, Foreign Minister Lawrence Cannon, in Niagara Falls to celebrate the 100-year anniversary of the Boundary Waters Treaty. While the Treaty governs all international waters shared by Canada and the USA, its primary application is to Great Lakes’ policy. As part of the…
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No reason to care about water
Don’t get upset–it is merely an instance of irony. Irony works in getting people’s attention and emphasizing the real meaning behind it. The video is more for the general public who are not familiar with water issues, but it can also be motivating to professionals and people who are active concerning water issues. The message…
By studying thousands of buildings and analyzing their electricity use, Columbia Climate School Dean Alexis Abramson has been able to uncover ways to significantly cut energy consumption and emissions. Watch the Video: “Engineering a Cooler Future Through Smarter Buildings“