Farmers and health experts say it’s complicated. RFK Jr.’s milk adviser, Mark McAfee, says he’s up for the challenge.

Experiments that make viruses more virulent or contagious present significant risks. Are those risks worth the rewards?

Pyrrhotite causes cracks in concrete. But research on how widespread the issue might be has only scratched the surface.

To receive federal funding, such high-risk work — sometimes called “gain of function” — must be evaluated by a government committee. That committee follows a framework that was influenced by guidance ...