The James Webb telescope spotted CO2 in an exoplanet’s atmosphere

The James Webb Space Telescope has gotten the first sniff of carbon dioxide in the atmosphere of a planet in another solar system. “It’s incontrovertible. It’s there. It’s definitely there,”…

Smruthi Karthikeyan turned to wastewater to get ahead of COVID-19

Environmental engineer Smruthi Karthikeyan had spent just a couple of days working in her new lab at the University of California, San Diego when the state instituted its first coronavirus…

Emily Jacobs wants to know how sex hormones sculpt the brain

When Emily Jacobs embarked on a career studying the brain in the early 2000s, a technique called functional magnetic resonance imaging, or fMRI, was having a moment. “Just like we…

Tina Lasisi wants to untangle the evolution of human hair

Though humans’ nearly hairless bodies stick out like a cowlick among other primates, our nakedness isn’t unique in the world of mammals. Dolphins and whales are naked, says biological anthropologist…

Marcos Simões-Costa asks how cells in the embryo get their identities

Growing up in Brazil, Marcos Simões-Costa often visited his grandparents’ farm in the Amazon. That immersion in nature — squawking toucans and all — sparked his fascination with science and…

The pandemic may be stunting young adults’ personality development

The psychological development of young adults may have taken a hit, thanks to the COVID-19 pandemic. In typical times, people tend to become more conscientious and agreeable and less neurotic…

This robotic pill clears mucus from the gut to deliver meds

A mucus-wicking robotic pill may offer a new way to deliver meds. The multivitamin-sized device houses a motor and a cargo hold for drugs, including ones that are typically given…

Ancient fish fossils highlight the strangeness of our vertebrate ancestors

My, what small teeth they had. A newfound treasure trove of ancient fish fossils unearthed in southern China is opening a window into the earliest history of jawed vertebrates —…

False teeth could double as hearing aids

Prosthetic teeth could make great hearing aids. Vibrations applied to replacements for lost teeth travel well through jawbones to the inner ear, researchers report in the September Journal of the…

Save Our Sequoias Act Poses More Threat than Promise

By Susan Britting and Isabella Langone Giant sequoia (Sequoiadendron giganteum) at the Mariposa Grove of Giant Sequoias; Image: Jeff Bisbee In the last two years, California’s leaders have allocated unprecedented…