**Saturday Citations: Volcano vs. asteroid; NASA's supernova time lapse; immortal chemicals**

This week, we're highlighting a study involving toxic chemical contaminants, and just for fun, a second study involving other toxic chemical contaminants. But NASA made a cool time-lapse video using the good old Hubble space telescope, and a group of Italian demographers have a lot to say about the population-level consequences of lying.

https://phys.org/news/2023-09-saturday-citations-volcano-asteroid-nasa.html