Earth Day

The first Earth Day in 1970 ignited a movement to stop polluting our planet. Today, our scientists and experts are tackling the most pressing challenges to achieve real-world impact: food security, decarbonization, healthy water systems, climate resilient cities, disaster preparedness, and more. This Earth Day, with a special focus on renewable energy, join us in our commitment to realizing a just and sustainable future for our planet.

Earth Day 2025 Highlights: Our Power, Our Planet

Our Power, Our Planet - Q&A with Dean and Renewable Energy Expert Alexis Abramson

Infographic: Cool Tips for Hot Days (And Lower Bills)

Energy Efficiency Begins at Home: A Conversation with Alexis Abramson

Endangered juvenile red-shanked doucs, Cuc Phuong National Park, Vietnam (Jenna Lawrence, Climate School)

Columbia Beautiful Planet 2025

Overhead view of circular array of solar reflectors and illuminated central tower in desert at Noor Solar Power Station

Powering the Future: Innovative Renewable Energy Projects Around the World

A Green Climate Fund project increases the climate resilience of Northern Rwanda. Credit: Rwanda Green Fund

Why Climate Finance Is Key to Fighting Climate Change

A zoomed in image of tiny colorful plastic particles on human fingers. Credit: Lukasz Kobus/European Commission

Five Ways To Make Your Life More Sustainable

Various icons representing renewable energy with the text Earth Day 2025: Our Power, Our Planet - April 22

We Have the Power To Protect Our Planet

The Punta Lima wind farm, which has lost almost half of its turbines. Credit: Western Area Power

How Climate Change Impacts Renewable Energy

Solar panels and wind turbines. Credit: Kenueone from Pixabay

New Report Refutes 33 False Claims About Solar, Wind and Electric Vehicles

Solar plant in Aikawa Town, Japan. Credit: Σ64

What Is Decarbonization, and How Do We Make It Happen?

Earth Day Actions and Interactives

Quick Tips to Repair Broken Items and Keep Them Out of the Landfill

The 37 Easiest Ways to Reduce Your Carbon Footprint: Animated Infographic)

The 37 Easiest Ways to Reduce Your Carbon Footprint (Animated Graphic)

Things You Can Do to Make A Difference (And Have Fun) on Earth Day

What Is Decarbonization, and How Do We Do It?

Decarbonization: An Animated Graphic

Why Nature Is Good for Us: An Illustrated and Animated Guide

Quiz: Earth Day and Environmentalism

Five Tips for Taking Climate Action in Your Community

Ecorestoration by Instituto Terra turned barren land into a lush rainforest. Credit: Antonio Carlos Lima Barbosa

How You Can Help Restore Nature on Earth Day

8 Meaningful Actions You Can Take This Earth Day

Earth Day 2024 Highlights: Planet vs. Plastics

Plugging the Leak on Laundry Pollution

Quiz: Plastics 101

Microplastics in the Chesapeake Bay Watershed. Photo: Chesapeake Bay Program

Protecting Our Planet: 5 Strategies for Reducing Plastic Waste

Plastic and other debris washed up on beach. Credit: NOAA's National Ocean Service

This Earth Day, Choose the Planet Over Plastics

Depiction of nanoplastics in a bottle of water. Credit: Naixin Qian

Bottled Water Can Contain Hundreds of Thousands of Previously Uncounted Tiny Plastic Bits, Study Finds

Meet the Woman Pioneering Sustainable Change in Fashion

Let Them Wear Dirt: Penmai Chongtoua Turns Soil Into Textiles

Eastern screech owl in an apple tree on Lamont-Doherty Earth Observatory campus Credit: Timothy Trimble, Lamont-Doherty Earth Observatory

Columbia Beautiful Planet 2024

Lamont archeologist Kristina Douglass in her lab with collaborators from Madagascar

Science for the Planet

Science for the Planet is our short video explainer series about how Columbia Climate School scientists and scholars are trying to understand the effects of climate change and help solve the crisis.

hAIku: AI Generated Poetry

Celebrate Earth Day by having Da Vinci, an artificial intelligence engine created by OpenAI, compose a haiku on the science or nature topic of your choice!