Water42
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Sprouting Trees From the Underground Forest — A Simple Way to Fight Desertification and Climate Change
Beginning in Niger in the 1980s, Tony Rinaudo, an African aid missionary, began working with farmers to develop a new approach to reforesting degraded landscape. The practice he developed involved selective pruning of shrub shoots to a main stem, which was then pruned of its lower leaves and branches. Within a few years, new woodlands…
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The 7 Billion Challenge
The rapid rise in the world’s population to 7 billion — from 6 billion a dozen years ago — poses enormous challenges. In this video, Earth Institute Director Jeffrey D. Sachs talks about the stresses our population already puts on the planet, and the mission of the institute to promote sustainable development.
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Join a Conversation About 7 Billion People
The world’s population will reach 7 billion this year, and the UN estimates continued growth, primarily in less-developed regions. What will this steep population growth mean for our environmental, economic and social systems? Join the conversation on Oct. 17.
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What are the Keystone XL Pipeline Risks to Water Resources?
One of the issues most passionately discussed now in the media and blogosphere is the KeystoneXL Pipeline proposal, to allow Canadian oil and gas company TransCanada to build a pipeline to transfer tar sands oil from Alberta to Texas. So what are the arguments?
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Natural Processes Can Limit Spread of Arsenic in Water, Says Study
Wells From Asia to North America Vulnerable
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Imagining the Hudson before Humans
Pollution is just one way that humans have transformed the Hudson River. A small way, it turns out. We have altered the Hudson’s shape, the speed of its flow and the mix of plants and trees along its banks. In a new book, Environmental History of the Hudson River, two Lamont-Doherty scientists who contributed chapters—Frank…
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Using Tree Rings to Understand and Protect New York’s Water
The upper Delaware River Basin System is one of the largest water supply systems for the city of New York. Today our understanding and management of these reservoir systems is based on the short historical records of data, which are limited. Scientists need to find a way to look further into the past. One of…
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Pharmaceuticals in the Water Supply: Is this a threat?
According to the GAO, a “study focused on untreated source water used by public drinking water systems” found that 53 of 74 sites tested had at least one pharmaceutical present, and in 2010 the EPA showed that 54 active pharmaceutical ingredients and 10 metabolites, the product of biological changes to a chemical, had been found…
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In Dry Texas, Recycled Water Looks Better and Better
As the drought in Texas continues with no end in sight, some cities are turning to innovative water alternatives in an attempt to maintain quality of life as they know it. The new mindset includes viewing waste water as an asset.
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