you asked Archives - State of the Planet

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You Asked: If CO2 Is Only 0.04% of the Atmosphere, How Does it Drive Global Warming?

Short answer: A little bit goes a long way.

by |July 30, 2019

You Asked About River Salinity and Water Pollution

A Columbia Water Center staffer answers questions about salinization and water pollution.

by |May 3, 2019

You Asked: Do Plastic Bag Bans Work in Developing Nations?

An environmental lawyer tells us about the impact of anti-plastic bag legislation across the world.

by |April 30, 2019

You Asked: How Can I Find Out the Carbon Footprints of Different Foods?

We look at research from the Earth Institute and beyond to answer questions about the impacts of beef, soy, and more.

by |April 24, 2019

You Asked: What Determines the Oxygen and CO2 Levels in Our Atmosphere?

An Earth Institute climate researcher breaks down why our atmosphere is the way it is, how it’s changed over time, and what the future may hold.

by |April 22, 2019

You Asked: What Are the Most Eco-Friendly Garbage Bags?

An Earth Institute staffer gives advice on alternative trash bag options and how reduce your need for trash bags altogether.

by |April 22, 2019

You Asked: Why Do We Know More About the Moon Than Our Own Oceans?

An Earth Institute oceanographer answers this deep question from a reader as part of our Earth Month Q&A on Instagram.

by |April 19, 2019

Your Earth Questions, Answered

In celebration of Earth Month and Earth Day, our scientists are tackling reader questions on science and sustainability.

by |April 17, 2019