Varroa destructor mites are killing honeybees at an alarming rate. We’ll go inside the race to stop these parasites. Plus, meet the subnivium, a layer between snowpack and soil where some spiders, beetles, and centipedes spend the winter. And, enjoy the spectacular display of science during a baseball game—from physics to biomechanics.

After a controversial Alzheimer’s medication was discontinued, a new anti-amyloid drug receives extra scrutiny from the FDA. Plus, a new analysis finds that more viruses spread from humans to animals than from animals to humans. And, the science advisor for the Netflix adaptation of “The 3 Body Problem” breaks down the physics in the show.