What was the name of the Earth Day 2010 campaign?

The Earth Day 2010 campaign was called A Billion Acts of Green.

Launched by Earth Day Network for Earth Day’s 40th anniversary, the campaign invited individuals, schools, businesses, governments, and community groups to pledge measurable environmental actions. Examples included planting trees, cleaning public spaces, improving energy efficiency, reducing waste, and making lower-carbon lifestyle choices.

The campaign used Earthday.org as an online action center where participants could register their commitments. Its goal was not simply to stage one day of demonstrations, but to aggregate millions of practical actions into a visible global demand for stronger environmental policies and a greener economy. Earth Day 2010 also included climate rallies, school projects, and a Global Day of Conversation involving elected officials in many countries.

The billion-action target was reached in 2012, ahead of the Rio+20 United Nations Conference on Sustainable Development. “Mobilize the Earth” is commonly confused with the campaign, but it was associated with Earth Day 2012, not the 2010 initiative. “Trees for the Earth” became a later Earth Day theme.