Can we find extraterrestrial civilizations by searching the cosmos for their pollutants? Are humans hard-wired to be productive? And what can we learn about leisure from hunter-gatherer societies? Plus, a big uh-oh from HBO Max and masks that are sure to freak out everyone you encounter.Sponsors:Lightstream, Get a special interest rate discount at lightstream.com/kottkeFitbod, Get 25% off a membership at Fitbod.me/kottkeLinks:Can Alien Smog Lead Us to Extraterrestrial Civilizations? (Wired)How Civilization Broke Our Brains (The Atlantic)Zack Snyder's Justice League leaked early on HBO Max (CNET) Maskalike — Your Own Face On A MaskKottke.OrgJackson Bird on TwitterSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.