April 22 marks the day When Is Earth Day, a yearly event recognized across the globe. In Earth Day 2025, the event reached its 55th anniversary, prompting reflection on decades of environmental focus.

The observance began in 1970, conceived by U.S. Senator Gaylord Nelson. His aim was to raise public awareness about pollution and environmental decline, inspired by the era's anti-war teach-ins.

The first Earth Day saw wide participation; an estimated 20 million Americans took part in events nationwide. This national outpouring of concern helped spur action in Washington, contributing to the creation of the Environmental Protection Agency and passage of landmark environmental laws.

This year, citizens engaged in various activities to mark the day. Some participated in clean-up efforts or educational programs. Others chose forms of activism, like the climate activist hold a protest near the New York Stock Exchange. Tree planting events, including mangrove planting in some areas, also took place.

Experts often share advice on how individuals can contribute to planetary health. Suggestions range from managing overall consumption to considering dietary choices. One expert noted that eating a plant-based diet broadly improves sustainability based on various metrics.

Progress happens significantly at local levels. Communities implement changes suited to their specific needs. Examples include schools exploring renewable energy options, such as the installing solar panels at a school district in Wisconsin.

Companies also make decisions based on efficiency and economic sense, sometimes leading to environmentally positive outcomes. These market-driven and local initiatives represent practical steps toward addressing environmental challenges.

While much has been accomplished since the first Earth Day, leaders and activists acknowledge that efforts to protect the environment require sustained commitment. The day serves as a reminder of this ongoing work.

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