A local cupcake store in New Jersey is donating 10 percent of its sales to local environmental centers. The Glen Ellyn Park District outside of Chicago is organizing a clean-up day. Even the U.S. Postal Service is holding events, recognizing its eco-friendly achievements such as recycling and reducing its carbon footprint. There are myriad ways for everyone, across the nation and around the world, to celebrate Earth Day on Sunday, April 22.

Earth Day stamp

U.S. stamp promotes recycling on Earth Day and every day. Courtesy U.S. Postal Service

This year marks the 42nd anniversary of the observance. And the evidence is clear that the environment in which we live has a profound impact on human health. Clean drinking water, a safe food source, air quality, the built environment, climate change, exposure to toxic substances. All are environmental factors that can potentially affect health.

Below are a few other activities that people can take part in or steps you can take to mark Earth Day this year and to explore or underscore the important connections between the environment and health.

Pledge to carry out an Act of Green — from biking to work to getting a home energy audit (and doing what it says!).

Watch Environment. Health. You., a short film from APHA’s Environment Section that provides a snapshot of the early environmental public health conditions, successes in changing the environmental health landscape and the environmental health challenges that lie ahead.

Post your ideas or follow the conversation on environmental issues on the U.S. Environmental Protection Agency’s conversation board.

Check out the latest resources on APHA’s Environmental Health website, including APHA’s Climate Change Guidebook.

Feeling pithy? Submit six words that describe our planet.

Strike a pose. Take a photo of your environment on Earth Day and share it on Flickr.

Find a local Earth Day event near you.

If you live near Washington D.C., attend the Earth Day event on the National Mall.

How will you mark Earth Day?