Author: Talia Ogliore

Nanoscale photocatalysts are small, man-made particles that harvest energy from sunlight to produce liquid fuels and other useful chemicals. A new imaging solution developed at Washington University in St. Louis reveals the significance of a particular structural feature — clusters of oxygen vacancies — in achieving high photocatalytic activity.

William B. McKinnon, professor of earth and planetary sciences in Arts & Sciences at Washington University in St. Louis, led one of three new studies that together provide a far more complete picture of the composition and origin of Arrokoth. The new research published in Science points to the resolution of a longstanding scientific controversy about how such primitive planetary building blocks called planetesimals were formed.

Heralded as a genetically modified crop with the potential to save millions of lives, Golden Rice has just been approved as safe for human and animal consumption by regulators in the Philippines. But a new study by Glenn Davis Stone, professor of sociocultural anthropology and environmental studies in Arts & Sciences, finds that most families affected by Vitamin A deficiency can’t grow Golden Rice themselves, and most commercial farmers won’t grow it either.

Menstruation is considered taboo in Ethiopia, and girls often miss school or drop out because of their periods. Freweini Mebrahtu designed a solution — and, with support from St. Louis-based charity Dignity Period, founded by a Washington University faculty member, it has benefited nearly 800,000 girls and women. Mebrahtu was recently named CNN’s “Hero of the Year.”

Barbara G. Pickard, professor emerita of biology in Arts & Sciences at Washington University in St. Louis, died Dec. 6, 2019, in St. Louis from complications related to hip surgery. She was 83.

Bhupal Dev, assistant professor of physics in Arts & Sciences at Washington University in St. Louis, proposes a new way to leverage data from ultra-high energy neutrinos from large neutrino telescopes such as the IceCube Neutrino Observatory in Antarctica.

Presolar grains — tiny bits of solid interstellar material formed before the sun was born — are sometimes found in primitive meteorites. But a noble gas analysis from physicists in Arts & Sciences reveals evidence of presolar grains in part of a meteorite where they are not expected to be found.

Hard plant foods like seeds and nuts may have made up a larger part of early human ancestors’ diet than currently presumed, according to a new experimental study of modern tooth enamel from anthropologists in Arts & Sciences.

A balloon-borne scientific instrument designed to study the origin of cosmic rays is taking its second turn high above the continent of Antarctica three and a half weeks after its launch.

Chemists in Arts & Sciences have re-engineered one of nature’s solar cells to drive electrons down an alternate path. This work advances the understanding of the earliest light-driven events of photosynthesis and is published in the Proceedings of the National Academy of Sciences.