Sean Daily, Green Living Ideas‘ Editor-In-Chief, discusses the use of intelligent irrigation technologies to save water and green your landscaping with Chris Spain, CEO of Hydropoint.
Click Play Below,
or
It’s not that Mt. Whitney, the tallest mountain in the Lower 48, needs any more publicity. After all, about 30,000 hikers annually make the trek up to the thin air of 14, 496 feet. People who secure even a day use wilderness permit (not much fun making the ascent in one day) through the Mt. Whitney lottery system often feel better than if they had won a state run lottery where they actually win money.
On a recent (this past week) stroll up into the thin air of Mt. Whitney my hiking buddies and I discovered some things. While most hikers have courtesy and smarts to be as conscious as possible toward environmental stewardship it always happens where a few conventionally grown apples ruin it for everyone else. Case in point being at the last reliable water source (High Camp Tarn) before the final push up the 99 switchbacks to reach the summit what did we spy? A dazzling reflection of the various peaks? Yes. A plethora of discarded Mountain House packages resting on the floor of the tarn. You bet. Not only did these packages tarnish the beauty of the scenic watering hole but even forgetting esthetics, who wants to drink water from a polluted lake before a major climb?
Read the rest of this entry »
By Lester R. Brown
To understand our current environmental dilemma, it helps to look at earlier civilizations that also got into environmental trouble. Our early twenty-first century civilization is not the first to face the prospect of environmentally induced economic decline. The question is how we will respond.
As Jared Diamond points out in his book Collapse, some of the early societies that were in environmental trouble were able to change their ways in time to avoid decline and collapse. Six centuries ago, for example, Icelanders realized that overgrazing on their grass-covered highlands was leading to extensive soil loss from the inherently thin soils of the region. Rather than lose the grasslands and face economic decline, farmers joined together to determine how many sheep the highlands could sustain and then allocated quotas among themselves, thus preserving their grasslands. Their wool production and woolen goods industry continue to thrive today.
Not all societies have fared as well as the Icelanders. The early Sumerian civilization of the fourth millennium BC had advanced far beyond any that had existed before. Its carefully engineered irrigation system gave rise to a highly productive agriculture, one that enabled farmers to produce a food surplus, supporting formation of the first cities and the first written language, cuneiform.
By any measure it was an extraordinary civilization, but there was an environmental flaw in the design of its irrigation system, one that would eventually undermine its food supply. The water that backed up behind dams built across the Euphrates was diverted onto the land through a network of gravity-fed canals. As with most irrigation systems, some irrigation water percolated downward. In this region, where underground drainage was weak, this slowly raised the water table. As the water climbed to within inches of the surface, it began to evaporate into the atmosphere, leaving behind salt. Over time, the accumulation of salt on the soil surface lowered the land’s productivity.
Shifting from wheat to barley, a more salt-tolerant plant, postponed Sumer’s decline, but it was treating the symptoms, not the cause, of their falling crop yields. As salt concentrations continued to build, the yields of barley eventually declined also. The resultant shrinkage of the food supply undermined this once-great civilization. As land productivity declined, so did the civilization.
GreenTalk Radio host Sean Daily talks with Sabrina Walasek of Blue Planet Run Foundation, which has a vision of a world where everyone has access to safe drinking water and healthy human beings have a chance to live up to their potential.
[Courtesy of our friends at GreenLivingIdeas.com]Click Play Below,or
Think the barrels normally used for rainwater harvesting are ugly? You’re not alone: that’s the response University of Akron art education professor Elisa Gargarella heard from friends in response to her own home rain barrel. Rather than put the barrel away, though, Gargarella found inspiration in her friends’ distaste: if people find them ugly, why not make them beautiful?
Sounds like the approach an artist would take, right? Gargarella went a step further, though: as the director of Arts LIFT, an arts apprenticeship program for urban youth, she made beautifying rain barrels the centerpiece of this summer’s program. She also added an environmental education component: the ten teenage apprentices spent time learning about water-use issues, listening to lectures on water conservation, and even taking a tour of the local sewage treatment plant.
GreenTalk Radio host Sean Daily talks to Stephanie Thornton of the EPA about their WaterSense program. Much like the EnergyStar program, WaterSense seeks to help Americans to save water and protect the environment by creating product efficiency standards that manufacturers must meet in order to receive the WaterSense certification label on their products.
[Courtesy of our friends at GreenLivingIdeas.com]Click Play Below,or
By Lester R. Brown
Today we are an oil-based civilization, one that is totally dependent on a resource whose production will soon be falling. Since 1981, the quantity of oil extracted has exceeded new discoveries by an ever-widening margin. In 2008, the world pumped 31 billion barrels of oil but discovered fewer than 9 billion barrels of new oil. World reserves of conventional oil are in a free fall, dropping every year.
As I note in my latest book, Plan B 3.0: Mobilizing to Save Civilization, discoveries of conventional oil total roughly 2 trillion barrels, of which 1 trillion have been extracted so far, with another trillion barrels to go. By themselves, however, these numbers miss a central point. As security analyst Michael Klare notes, the first trillion barrels was easy oil, “oil that’s found on shore or near to shore; oil close to the surface and concentrated in large reservoirs; oil produced in friendly, safe, and welcoming places.” The other half, Klare notes, is tough oil, “oil that’s buried far offshore or deep underground; oil scattered in small, hard-to-find reservoirs; oil that must be obtained from unfriendly, politically dangerous, or hazardous places.”
This prospect of peaking oil production has direct consequences for world food security, as modern agriculture depends heavily on the use of fossil fuels. Most tractors use gasoline or diesel fuel. Irrigation pumps use diesel fuel, natural gas, or coal-fired electricity. Fertilizer production is also energy-intensive. Natural gas is used to synthesize the basic ammonia building block in nitrogen fertilizers. The mining, manufacture, and international transport of phosphates and potash all depend on oil.
Still have bottled water as a regular item on the grocery list? Or just pick up the occasional bottle when you’re out? It’s so convenient…
As you probably know, that convenience comes at an environmental and social price: documentaries such as FLOW and Thirst, organizations such as the Sierra Club and Environmental Defense Fund, and even a few of us lowly bloggers, have reported on the costs created by water’s transformation from a freely-available resource to a multi-billion dollar commodity. That bottle of water you buy now contributes to the world’s third-largest industry.
As the earth warms, the melting of the earth’s two massive ice sheets—Antarctica and Greenland—could raise sea level enormously. If the Greenland ice sheet were to melt, it would raise sea level 7 meters (23 feet). Melting of the West Antarctic Ice Sheet would raise sea level 5 meters (16 feet). But even just partial melting of these ice sheets will have a dramatic effect on sea level rise. Senior scientists are noting that the Intergovernmental Panel on Climate Change (IPCC) projections of sea level rise during this century of 18 to 59 centimeters are already obsolete and that a rise of 2 meters during this time is within range.
As I note in Plan B 3.0: Mobilizing to Save Civilization, assessing the prospects for the Greenland ice sheet begins with looking at the warming of the Arctic region. A 2005 study, conducted by the Arctic Climate Impact Assessment (ACIA) team, an international group of 300 scientists, concluded that the Arctic is warming almost twice as fast as the rest of the planet. It found that in the regions surrounding the Arctic, including Alaska, western Canada, and eastern Russia, winter temperatures have already climbed by 3-4 degrees Celsius (4–7 degrees Fahrenheit) over the last half-century.
In testimony before the U.S. Senate Commerce Committee, Sheila Watt-Cloutier, an Inuit speaking on behalf of the 155,000 Inuits who live in Alaska, Canada, Greenland, and the Russian Federation, described their struggle to survive in the fast-changing Arctic climate as “a snapshot of what is happening to the planet.” She called the warming of the Arctic “a defining event in the history of this planet.” Read the rest of this entry »
Conclusion of GreenTalk Radio host Sean Daily’s conversation with American independent filmmaker Sam Bozzo of Purple Turtle Films about his new award-winning documentary on the global water crisis, “Blue Gold: World Water Wars”.
[Courtesy of our friends at GreenLivingIdeas.com]Click Play Below,or
Sustainablog
Since July 2003, sustainablog has been providing information on environmental and economic sustainability, green and sustainable business, and environmental politics. The blog regularly features environmental leaders, experts in alternative energy and green technology, and real people trying to lighten their environmental footprints.
Subscribe via email
