Earth Day is an annual event on April 22 to demonstrate support for environmental protection. First held on April 22, 1970, it now includes a wide range of events coordinated globally through earthday.org including 1 billion people in more than 193 countries.
Key Facts
| Subject | Earth Day |
| Category | Annual international event on April 22 |
| Reading time | 1 min · Intermediate |
| Key date | 1970 |
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