Water73
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Let’s Discuss Our Water Sources: Impacts of Natural Gas Extraction Along the Upper Delaware
In public debate about the future of America’s energy policy, the Northeast region is in contention regarding gas drilling in the Marcellus Shale field. With this project, we focused on the Marcellus Shale gas extraction along the Upper Delaware, in the Town of Hancock. The process of extraction includes potential environmental hazards and while contentious,…
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Punjab: Less Water, More Money (Part 1)
In an earlier blog, I highlighted the story of declining groundwater in many parts of India. This story is one of agricultural intensification and widespread groundwater pumping, facilitated by highly subsidized or free electricity. As the Government of India sought food security for the nation, it promoted the procurement of rice and wheat from the…
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Food Security Under Climate Change
In 2008 the world faced one of its most severe food crises in recent history. Around the world riots broke out in otherwise food-secure nations — places like Egypt, Russia, Mexico, and Brazil. The world’s governments responded — a major U.N. conference was held in Geneva. What they discussed there was the fundamental issue of…
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Water Reflections: Crisis of water supplies in New Delhi, India
Written in collaboration with Meghna Bhattacharjee. Failed monsoon rains put a cloud over the Columbia Water Center’s journey to India this summer. Soaring temperatures hitting 40 degrees Celsius with 100% humidity made for a hazy sweltering experience which begged for some precipitous relief. As we traveled around New Delhi from air-conditioned cars to air-conditioned rooms,…
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Water/commodity series (4)Corn feed consumption: China, US, and India
Among various uses of corn, the three major uses—food, animal feed, and biofuel production—compete in demand. Here we analyzed the percentage of corn for animal feed compared to total domestic consumption of corn (including feed, food, seed, and industrial uses) in US, China, and India.
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Water/commodity series (3)Wheat import/export
We found top three importers and exporters of wheat in 1960, 1970, 1980, 1990, 2000, and 2008.
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Water/commodity series (2)Per capita wheat production: China, US, and India
Using wheat production and population data for China, US, and India since 1960, we analyzed per capita wheat production. Because per capita wheat consumption is fairly stable over time (though it can change a little bit by changing lifestyle, diet, economic status, etc), from per capita wheat production, it can be shown whether a country…
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Water/commodity series (1)Wheat yield: China,US, and India
China shows the biggest improvement in yield over last 50 years; it improved almost by six times, while United States only doubled and India tripled. Although China and India showed very similar yield level in 1960s, China started to take off around early 1970. United States shows a relatively little change in yield and China…
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California’s other crisis
The “Golden” State doesn’t seem so golden these days. LA’s recent wildfires and Sacramento’s recent budget crises have left a dark cloud hanging over the state. Compounding the state’s financial woes and charred image is a problem potentially even more challenging: drought. Since 2000, the state’s reservoirs have been depleted and current climate change projections…
AGU25, the premier Earth and space science conference, takes place December 15-19, 2025 in New Orleans, Louisiana. This year’s theme—Where Science Connects Us—puts in focus how science depends on connection, from the lab to the field to the ballot box. Once again, Lamont-Doherty Earth Observatory and Columbia Climate School scientists, experts, students, and educators are playing an active role, sharing our research and helping shape the future of our planet. #AGU25 Learn More