Science today spans the intimate and the planetary. Researchers are sharpening the answer to a familiar summer mystery: why mosquitoes seem to favor some people, finding that exhaled carbon dioxide, body heat, humidity and especially complex odor signatures shaped by skin microbes all help guide the insects, while popular theories about blood type or eye color remain weakly supported. Far beyond Earth, NASA’s Perseverance rover has marked its deepest push west of Jezero Crater with a new selfie stitched from 61 images, taken after drilling into a rock outcrop on ancient Martian terrain. Back on our own planet, helium isotope readings from hot springs in Zambia hint that mantle gases may be slipping upward through a newly weakened patch of crust, offering tentative evidence of an emerging tectonic rift. And in science policy, the Trump administration is scrapping a Biden-era rule that elevated conservation as a formal use of public lands.