A Chinese man hired a Florida surrogate, then didn’t pick up his kids because of visas issues, sparking a custody battle that could upend the lucrative, largely unregulated industry. Emi Nietfeld spent more than a year reporting this rollercoaster of a feature. One particularly harrowing turn involves the father hiring people to retrieve the babies for him:

As the men continued knocking on her door, Simpson’s phone convulsed with notifications. Zhou messaged her nonstop. He called 53 times. “If you don’t give my babies to us, we have to report to the police. And you will be arrested immediately,” he warned. Then came pleas—or were they threats? “Think about your daughter,” he wrote, referring to Simpson’s 5-year-old. “I don’t think you want to have her be live without you for several years!”

Halfway across the world, Zhou paced in his apartment, chest seizing in panic. Over and over, he’d tried to explain his predicament to Simpson. He was still waiting for his visa interview; without her help, he couldn’t get his kids home. Running out of money and options, he’d hired the handlers as a last resort. Now, as his calls and messages went ignored, he feared she’d fallen in love with his children and would never let them go.

In this edition: in a pickle; gut feeling; king of pain; life (or something like it); for those about to rock.

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.”