The Earth Day Network and it's 2019 campaign is called Protect Our Species. It's a known fact that we are facing the largest rate of extinction since we lost the dinosaurs more than 60 million years ago.

Studies estimate that we are now losing species at 1,000 to 10,000 times the normal rate. Insect populations have decreased by more than 45% worldwide; 40% of the world’s bird species are in decline; beekeepers report annual hive losses of 30% or higher, and the list goes on.
This year's Earth Day is designed to spotlight climate change, deforestation, habitat loss, trafficking and poaching, unsustainable agriculture, pollution, and pesticides.
Earth Day 2019’s Protect Our Species campaign is set up to educate and raise awareness about the accelerating rate of extinction of millions of species and the causes and consequences of this phenomenon. Achieve major policy victories that protect broad groups of species as well as individual species and their habitats. Build and activate a global movement that embraces nature and its values. Encourage individual actions such as adopting a plant-based diet and stopping pesticide and herbicide use.
Source: earthday.org/