This isn´t exaclty about space science but it concerns all of us.
The Anthropocene is a recent and informal geologic chronological term that serves to mark the evidence and extent of human activities that have had a significant global impact on the Earth’s ecosystems. The term was coined by ecologist Eugene Stoermer but has been widely popularized by the Nobel Prize-winning atmospheric chemist Paul Crutzen, who regards the influence of human behavior on the Earth’s atmosphere in recent centuries as so significant as to constitute a new geological era for its lithosphere (Wikipedia).
The image above, made by Globaia.org, is a map of global transport systems and urban areas. It gives us the idea of how big is the impact of human activities on the surface of Earth.
Click image for larger version.