The following submission statement was provided by /u/broccolimemes:

This video discusses satellite megaconstellations as a newly realized threat posed to the ozone layer that is primarily driven by the atmospheric burning of deorbited satellites. As these thousands of satellites plummet back to Earth they release tons of aluminum oxide nanoparticles into the stratosphere.These metallic vapors act as a catalyst for chemical reactions that rapidly destroy ozone molecules. These particles linger for years and accelerate ozone-destroying chlorine reactions in the upper atmosphere. Thus, undermining the progress made by the Montreal Protocol which is commonly considered the world's greatest "come together to the save the environment" achievement. Researchers point out that the space industry currently operates like a massive, unregulated geoengineering experiment. Scientists warn that rapid expansion of satellite megaconstellations could severely erode the ozone layer by the 2040s.With major global operators—including SpaceX, Amazon (Kuiper), and others—rapidly expanding their swarms, the cumulative environmental impact is a growing focus of both atmospheric research and regulatory attention. SpaceX in particular is currently attempting to go public as the most expensive IPO in ever.

Edit: The video also discusses possible solutions to the issue such as building satellites out of wood and updating the Montreal protocol to regulate these satellite swarms. The issue needs to be addressed ASAP considering SpaceX has already filed an application with the FCC to launch a million satellites.

Please reply to OP's comment here: https://old.reddit.com/r/collapse/comments/1tg8xmj/satellite_megaconstellations_may_collapse_the/ometowg/