The Overview Effect describes the transformative impact of seeing Earth from space and feeling profoundly connected to our planet and concerned for it. That’s at odds with the impact of space tourism.
Air-ventilation upgrades have been badly needed in U.S. classrooms since long before the pandemic. Low-tech filtration systems that cost about the same as a textbook per student can make a big difference.
The number of substances emitted into the atmosphere is immense and growing, but some are particularly harmful to health and are subject to increased monitoring.