YouTube video by Caolan Robertson

Scientists are warning that emissions from skyrocketing numbers of satellite launches are contributing to a new and poorly understood form of air pollution that may affect Earth’s atmosphere and clima...

What does “Dow 50,000” actually tell you—anything about the economy, or just that a number got bigger? Dow 50,000 is a milestone, not a measurement. The level of the Dow is basically arbitrary: it’s…