Advocacy: Supporters encourage individuals and organizations to meet with elected officials to discuss environmental issues. The online program "Million Acts of Green," for instance, encourages visitors to adopt lifestyle changes such as composting, reducing your carbon footprint, or recycling e-waste.
Climate Change: Supporters raise awareness about climate change, human contribution to those changes, and opportunities to slow the phenomenon. Many Earth Day supporters, for instance, encourage citizens to support the landmark Paris Climate agreement, set to be signed on Earth Day 2016.
Conservation & Biology: Supporters work to conserve the world's biodiversity. On Earth Day 2010, for instance, participants in Sri Lanka planted more than 100 medicinal plants throughout the tropical rain forest at Yagirala Forest Reserve. These plants can be used by local populations and will create habitats for different organisms, enhancing the biodiversity of the island nation.
Education: Earth Day education programs provide educators, students, and the general public with resources and solutions to create a healthier, more sustainable planet. On Earth Day 2010, for instance, teachers and students in the Compostela Valley region of the Philippines participated in a day-long conference. At the conference, they learned about tree planting and care, participated in nature hikes, and presented their environmental action projects to the community.
Energy: Advocates support projects that develop renewable energy sources and technologies as means of transitioning off of nonrenewable sources, such as coal and oil. Citizens of Qatar, for example, are invited to switch off their power for one hour on Earth Day in a symbolic stance against human contributions to global warming.
Food & Agriculture: Supporters raise awareness about some farming practices, such as the use of chemical pesticides, which contribute to environmental degradation. Supporters also advocate for a greater support of organic, local, and sustainable agricultural techniques. Member organizations of this issue group include Articultores, based in Buenos Aires, Argentina, which raises awareness about urban gardening and brings citizens and youth together to plant in abandoned sites in cities.
Green Economy: Supporters advocate for the creation of green industries and jobs that are connected to renewable energy sources. For example, the Students in Free Enterprise group in Saskatchewan, Canada, sponsors a prize for student projects that make best use of recycled materials.
Green Schools: The Earth Day Network sponsors the National GREEN Schools Campaign. The GREEN Schools Campaign includes a focus on healthy school lunches, environmental classroom activities, outreach to local and national leaders, and an emphasis on sustainable building techniques.
Recycling & Waste Reduction: Supporters work to reduce the amount of waste that people produce, and increase the amount that we recycle and reuse. The Beach Bunch group of Brunei, for example, organizes beach-cleaning campaigns.
Sustainable Development: Supporters promote environmental practices that respect biodiversity and the natural world. Costa Rica, for instance, has implemented the Viaje Limpio program, in which individuals and companies pay a fee for the greenhouse gases they produce through travel. This money goes to protect the rain forest, water resources, and biodiversity of Costa Rica. Viaje Limpio helps the Costa Rican economy, because biodiversity and the rain forest are important natural assets that bring thousands of tourists to the country every year.
In only 40 years, Earth Day has evolved from a single day celebrating the environmental movement in the United States to a global network that empowers more than a billion people to better understand, protect, and improve the environment.