Earth Day Facts: The Numbers Behind the Environmental Crisis

Earth Day facts tell a story that starts with a protest in 1970 and runs through the latest data. The first Earth Day drew about 20 million Americans. Today, the same day draws attention to hard numbers on plastic, waste, carbon dioxide, and wildlife.

What Is Earth Day and How Did It Start?

Earth Day is a yearly day of action for the environment, held every April 22. The first one took place on April 22, 1970. About 20 million Americans joined demonstrations in cities across the country.

Organizers planned the day as a national teach-in on the environment. A teach-in is an informal public event where people learn about an issue and debate it. Think of it as an open class for the whole community.

The protest worked. EPA’s history of Earth Day credits those demonstrations with pushing the government to act. The numbers that followed tell the rest of the story.

How Earth Day Changed U.S. Environmental Law

Earth Day’s first measurable win came within months. The U.S. Environmental Protection Agency (EPA) was created in 1970. Congress passed the Clean Air Act that same year.

Two years later, in 1972, Congress passed the Clean Water Act. Other laws followed in the 1970s, including the Endangered Species Act. Earth Day helped build the public momentum behind these laws.

That pattern still shows up in policy today. Local and state rules on single-use plastic are a modern example of public concern turning into law. You can see which states that ban plastic bags have already acted.

How Many People Celebrate Earth Day Today?

Earth Day went global in 1990. That year, about 200 million people in 141 countries took part, according to EARTHDAY.ORG’s Earth Day history.

Today, EARTHDAY.ORG says Earth Day mobilizes about 1 billion people in 193 countries every year. That figure is the organizer’s own estimate, published on EARTHDAY.ORG’s Earth Day 2026 page. Older pages list 192 or “190+” countries, so you’ll see small differences across sources.

Year	Participants	Countries
1970	About 20 million	United States
1990	About 200 million	141
Today	About 1 billion	193

How is Earth Day celebrated around the world? EARTHDAY.ORG lists activities such as cleanups, citizen science, advocacy, and education. For a business, it’s also a natural time to review your own waste and packaging.

Earth Day Facts About Plastic Pollution

The world produced 460 million tonnes of plastic in 2019, according to the OECD Global Plastics Outlook. That was double the 234 million tonnes made in 2000. Only about 9% of plastic waste was recycled in 2019.

That 9% describes plastic waste, not all plastic produced. Single-use items like cups, lids, and cutlery often become waste after one use.

The State Department plastic pollution page estimates that 11 million metric tons of plastic enter the ocean each year. That number comes from a model, so other studies give different totals.

Plastic in the ocean breaks into smaller pieces over time. Those pieces can travel back to us through microplastics in the food chain.

The 9% figure also shows how little plastic waste gets a second life. We cover the limits of plastic recycling in a separate guide. Single-use drink bottles are a familiar example, and you can read more on plastic bottles’ environmental impact.

Earth Day Facts About Waste and Landfills

In 2018, the latest year in EPA’s national data, Americans generated 292.4 million tons of municipal solid waste, according to EPA’s national waste overview. That came to 4.9 pounds per person per day.

Read the 4.9-pound figure with care. EPA changed how it counts wasted food in 2018, which raised the total. That means you shouldn’t compare it directly with older years.

In 2018, containers and packaging made up 28.1% of that waste by weight, per EPA containers and packaging data. That’s more than one in every four pounds of trash.

Food is another big piece. The USDA food waste FAQs put uneaten food at 30-40% of the U.S. food supply. That estimate is based on 2010 data.

In restaurants, leftover food often leaves in the same bag as the packaging it came in. That pairing adds to the environmental impact of food waste.

Landfills are the third-largest source of human-related methane emissions in the U.S., according to EPA’s landfill gas basics. EPA estimates landfills made up about 14.4% of those emissions in 2022.

Methane forms when organic waste breaks down without oxygen, which EPA calls anaerobic decomposition. EPA says methane is at least 28 times as potent as carbon dioxide over 100 years.

Buried trash doesn’t vanish. See what happens to plastic foodware in landfills and which longest-lasting items in landfills stay around the longest.

Earth Day Facts About Climate and Air Quality

In 2024, global carbon dioxide averaged a record 422.8 parts per million (ppm), NOAA’s atmospheric carbon dioxide data shows. At NOAA’s Mauna Loa Observatory, yearly CO2 rose from about 326 ppm in 1970 to 424.6 ppm in 2024. You can see the full series in NOAA’s Mauna Loa CO2 record.

Mauna Loa, in Hawaii, reads a bit above the global average. That’s why the two 2024 figures differ. Single-month peaks run higher still, so check which number a source uses.

NOAA’s 2024 global climate report ranked 2024 as the warmest year in its record, which dates back to 1850. NOAA’s 2025 annual climate report ranked 2025 as the third-warmest year.

Air quality is a health issue as well as a climate issue. In 2019, 99% of the world’s population lived in places where air didn’t meet WHO guidelines.

The WHO air quality fact sheet links outdoor and household air pollution to 6.7 million early deaths a year. Outdoor air pollution alone caused an estimated 4.2 million early deaths in 2019.

Landfill methane is one climate source your business can affect directly. Commercial composting programs can take food scraps and certified compostable foodware. Where a local facility accepts them, that material stays out of landfills.

Earth Day Facts About Forests and Wildlife

The UN Food and Agriculture Organization (FAO) estimated yearly deforestation at about 10 million hectares in 2015-2020. That figure comes from the FAO forest resources assessment. A hectare is about 2.5 acres.

These figures measure deforestation, not net forest loss, because some areas regrow or get replanted.

The 2024 WWF Living Planet Report found that monitored wildlife populations fell by 73% on average between 1970 and 2020. It’s an average change across the vertebrate populations that scientists track.

This number is easy to misread. It doesn’t mean 73% of species are gone, or that 73% of all animals have died. It means the populations being watched have shrunk sharply, on average.

Forests and farms also supply the raw materials for paper and fiber products. Knowing what makes resources renewable helps you judge where your packaging materials come from.

What These Numbers Mean for Foodservice Businesses

These Earth Day facts point to choices you make every day. Packaging made up 28.1% of U.S. municipal solid waste in 2018.

Takeout containers, cups, and cutlery are part of that stream. Every item you buy has an end-of-life path, whether you plan for it or not.

Start with the items you buy in the highest volume, since those changes add up fastest. Practical steps you can take now:

• Cut single-use plastic items you don’t need, like automatic straws or extra cutlery in takeout bags.

• Check whether your area offers commercial composting before you switch materials.

• Choose products certified for the composting path your community actually has.

• Train staff to keep food scraps and compostable items out of the trash.

Match the product to the path it will actually take:

End-of-life path	What it needs	What to check
Home compost	A managed backyard or on-site compost pile	TÜV Austria OK Compost HOME certification
Commercial compost	BPI or TÜV Austria OK Compost INDUSTRIAL certification
Recycling	A local program that accepts the material	Your hauler’s accepted-items list
Landfill	Nothing, it’s the default	Ways to reduce the item or switch paths

Be honest with yourself about access. Compostable packaging only helps if it reaches a composting facility. If your waste goes to a landfill, a compostable fork ends up there too.

Ask your hauler or local facility which certified items they accept, because acceptance lists vary. Cutting single-use items helps wherever you operate, with or without composting.

Look for third-party marks like BPI or TÜV Austria. For home compost, check TÜV Austria OK compost HOME. For commercial facilities, check the OK compost INDUSTRIAL scheme or BPI commercial compost certification.

Our guide to composting certifications shows you how to read them. For item-by-item swaps, see our list of plastic alternatives for restaurants.

At Greenprint®, we design foodware with a defined end of life. Each product page lists the certification it carries, so you can match it to your local composting option.

If your area supports composting, explore our certified compostable foodservice packaging and match each product to your local system.

Frequently Asked Questions

Why Is Earth Day Celebrated on April 22?

Earth Day is held on April 22 because the first Earth Day took place on that date in 1970. The date has stayed the same every year since.

What Was the Earth Day 2026 Theme?

The Earth Day 2026 theme was “Our Power, Our Planet.” EARTHDAY.ORG also used that theme in 2025.

Why Is Earth Day Important?

Earth Day helped build momentum for the EPA, the Clean Air Act, and the Clean Water Act. Today, it keeps public attention on measurable problems like plastic pollution, landfill methane, and air quality.