On the ground, downstream questions that flow from any outcome remain deeply personal, as Undark contributor Jyoti Madhusoodanan makes clear with her cover story this month on the many obstacles faced by cancer survivors long after they’ve officially finished treatment.

Some experts say that deepfake technology and other AI tools could help tackle treatment-resistant conditions like anorexia and prolonged grief. But plenty of questions remain, including whether there could be damaging side effects and whether the therapy is even effective.

This year’s spring migration in North America unveiled real-time measures at a higher resolution than ever before. On one night, for instance, 156 million birds appeared in the skies, outpacing the forecasted total by 20 million. And researchers figured that out thanks to AI.

Welcome to the last installment of Entanglements, at least for the foreseeable future. In this final episode, hosts Brooke Borel and Anna Rothschild are joined by Undark editor-in-chief Tom Zeller Jr. to talk about the show’s successes, failures, and more.

Brazil has plans to repave a neglected 550-mile road in the South American rainforest to help connect the region and boost economic growth. But some scientists are concerned the project — which would likely increase access between humans, livestock, and wildlife — might be a biosecurity risk.

Opinion | Each year, more than 20,000 people in the U.S. donate their bodies to science after death. But the programs that handle whole-body donations lack oversight, with inconsistencies in standards of consent, transparency, and accountability. The result is reminiscent of the body-snatching practices of years past.

Opinion | The rise of artificial intelligence in science complicates the notion of expertise. When AI can be used to generate ideas, conduct research, and write papers, live scientific presentations — such as public talks and seminars — become more important as a way to demonstrate who is a real expert and who is not.

After years of limited oversight, the FDA sent warnings to more than 2,200 clinical trial sponsors about missing results, which were supposed to be uploaded to an official public database. Experts have pushed for greater transparency.

Kevin Tracey, a researcher and neurosurgeon whose team discovered the vagus nerve’s link to the immune system more than two decades ago, has developed an electrical implant to stimulate the nerve in an effort to help rheumatoid arthritis sufferers who currently have difficulty taking medications.

From rampaging bears to zero-G toilets and chicken cannons, Alex Davies, in “Kobuk the Destroyer,” chronicles the surprising and often bizarre world of test engineering, and the ingenious lengths to which product testers will go to make the world a safer place.

At an uncertain moment in the sciences, Stuart Firestein argues in favor of optimism in “It Could Be Otherwise,” since uncertainty leaves room for possibility, and possibility drives curiosity, imagination, and the agency to study the peculiarities of the natural world.