The genocide in Gaza has created some 60 tons of rubble. In doing so, it has released asbestos, lead, and other toxic materials, guaranteeing “an epidemic of cancer, lung disease, and brain damage,” Helen Epstein writes, “[that] could come to rival in lethality the war’s bombs and bullets.” Research is starting to make visible the scale of dangerous fallout, but there are limitations:

To confirm [scientist Yaakov] Garb’s estimates, it would be necessary to test soil samples from the areas he has identified as particularly likely to be contaminated. But the Israeli government seems to be obstructing efforts to carry out such tests, let alone assist the current and future victims of this environmental catastrophe. Aid workers and others entering Gaza attend an official briefing where they are informed that it is forbidden to leave the enclave with even small amounts of soil or sand. Once in the Strip, any scientists surreptitiously collecting research material risk being spotted by overhead surveillance drones. At departure checkpoints every piece of luggage is emptied onto a conveyor belt, and border guards carefully inspect each item. Several people told me they knew researchers whose soil samples had been confiscated. Palestinian researchers in Gaza have no capacity to conduct such experiments on their own, since the enclave lost all twelve of its universities and scores of scientists in the bombing. Without the Israeli government’s cooperation, only remote assessment and modeling like Garb’s can even begin to determine the scale and location of toxic contamination in which Gaza’s population now lives.

I’d be lying if I said I understand everything Michael Levin believes. But I’m also not alone; sometimes his own colleagues can’t even follow his arguments. Elizabeth Weil’s profile of the renegade (and genius) biologist bridges that gap, sketching out Levin’s research and claims in a way that’s just grokkable enough to blow your mind. I mean this as a true compliment: When’s the last time we had a genuine mad scientist on our hands?

Critics accuse Levin of all kinds of teleological crimes — making unfalsifiable claims, using words in ways that render those words meaningless. Levin is unfazed. In his talks, he tries to disarm his detractors by preempting the accusation that he’s nuts: “I have some unusual things to say and then I have some crazy things to say”; “So this is a kind of crazy claim I’m making.” His true retort is his wet lab. There, at the bench, he’s working to prove his metaphysics by running old-school (in a way) biological experiments. He studies flatworms with two heads. Frogs with eyes on their stomachs. Little round creatures called xenobots, synthesized from frog skin cells. They swim like tiny Pac-Men. They do not exist in nature.

“The only thing that ever settles arguments is technology,” Levin tells me, a line he borrowed from biophysicist Chris Fields. “People have been saying for thousands of years what they think” about minds, consciousness, souls, energy fields. “What I can contribute is ways to test some of those things.”

For Men’s Health, Brian Underwood investigates the flood of sunscreen misinformation on Instagram and TikTok, where influencers push inaccurate data about chemical UV filters, play chemist and promote their own DIY formulas, or even encourage no sun protection at all. Underwood sorts fact from fear, talking with dermatologists, chemists, and professionals who are working to reshape the messaging around sun exposure and sunscreen.

Environmental concerns may have also shown up in your feed, with suggestions that these same filters are poisoning our oceans, giving rise to a whole category of sunscreens labeled “reef safe”—a meaningless marketing term that’s not regulated by the FDA (the same goes for products labeled “natural” or “organic”). Dr. Nelson’s point about “low-relevance models” is something to consider here too: The research demonstrating that oxybenzone, octinoxate, and other active ingredients may lead to reef bleaching was done in a lab setting where coral was exposed to levels of these chemicals significantly higher than has been found in the natural environment. It conveniently left out the fact that inorganic filters like zinc oxide (the one typically used in “reef safe” formulas) would have the same effect in similar doses.