Health22
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Study Identifies Better, Cheaper Ways to Stem Arsenic Poisoning in Bangladesh
Some solutions are over 100 times cheaper than others, costing as little as $1 per person.
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A Case Against Vaccine Religious Exemptions
It is time for states to change their laws so that fringe religious objections do not get in the way of protecting the safety of children and people with compromised immune systems.
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High School Students in Peru Discover Lead Contamination Hotspots
Equipped with a field testing kit originally developed within Columbia’s Earth Institute, the “Lead-Free Kids Peru” project has tested hundreds of soil samples for the toxic metal — and dug up some startling results in the process.
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Data Visualization: World Happiness Trends
Could the number of women in a nation’s government have an impact on its happiness? Can air quality effect the mood of a population? Do trains make people happier? Explore World Happiness Report data and trends that might also contribute to a country’s overall well-being.
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Mining Pollution Limits Access to Clean Water in Papua New Guinea
A new report documents the social, environmental, economic, and health impacts of gold mining in Porgera, Papua New Guinea.
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Using Machine Learning to Eradicate the Tsetse Fly in Sub-Saharan Africa
A Columbia team is pioneering a machine learning-based imaging and sorting solution that would help to drastically reduce Africa’s tsetse population.
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How to Talk to Anti-Vaxxers
Research assistant Rachel Alter became a “pro-vaccine troll” so you don’t have to.
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What’s Needed for a Sustainable, Equitable and Healthy Food System?
A report integrates the environmental, health, and social impacts of agriculture into one framework to help us make informed decisions about food.
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Study Finds Sewage Bacteria Lurking in Hudson River Sediments
A new study shows that fecal bacteria from sewage can persist in far greater quantities in near-shore sediments than in the water of the Hudson River.

The first Earth Day in 1970 ignited a movement to stop polluting our planet. This Earth Month, join us in our commitment to realizing a just and sustainable future for our planet. Visit our Earth Day website for ideas, resources, and inspiration.