Archive for the ‘water’ Category
When it comes to renewable energy and efficiency, a double-dip in the dish is a great deal.
The latest in solar dish technology that does what solar installations do—converts sunlight into power—but with an added twist: it generates clean water.
The efficiency of the typical solar installation ranges from 10 to 20 percent, with the rest waste heat. Swiss researchers associated with IBM have developed the High Concentration PhotoVoltaic Thermal system (HCPVT), which uses that waste solar heat to generate fresh water.
It’s reminiscent of the ancient craft of turning lead into gold. But it’s not alchemy, it’s real. Read the rest of this entry »
Large water desalinization plant installations that will replenish water supplies hit by shrinking aquifers are good and necessary things, but those plants require a tremendous amount of energy produced from heavily polluting coal-fired plants, a story in the March 18 New Yorker reported.
Devouring a passel of “mega-crabs” from the Chesapeake Bay is pretty great if you’re a big fan of the Maryland Blue Crab, but not so good if that enjoyment comes at the expense of the Bay’s oyster population.
It’s hard not to get the feeling that addressing climate change and pollution is often a case of one step forward and two steps back. Or like a perverse game of whack-a-mole. Read the rest of this entry »
Guest post by Danielle Nierenberg, co-founder of Food Tank: The Food Think Tank
The United States is one of the world’s biggest users of water: many Americans use as much water as about 900 Kenyans. Water resources in the U.S. are shrinking. In the last five years, water shortages have occurred in almost every part of the country, including the worst drought in at least 25 years that hit 80 percent of the country’s farmland in 2012. Even worse, the damaged land won’t fully recover this year and at least 36 states are expecting local, regional, or statewide water shortages, even without the impact of drought.
The Natural Resources Defense Council expects water scarcity to affect the American South, West, and Midwest the most. Fourteen states in these regions already have “extreme” or “high” risk of water scarcity. Arizona, Florida, Idaho, Nevada, and Texas face the most danger because they are expected to see some of the largest population increases by 2030. Read the rest of this entry »