This issue of Science Scope includes articles that address the impact of humans on the Earth, overconsumption of natural resources, and how natural events—such as volcanoes—shape the decisions of local people. I encourage you to consider applying the lens of the 8th billionth person to the articles. What role does our population play in the consumption of natural resources? What role should society play in addressing the consequences of the human population? How do we ensure access to clean water, healthy food, and quality healthcare for all humans?