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How a giant predator of prehistoric seas was discovered — twice
Museum of Comparative Zoology collections manager Christina Byrd, at left, and MCZ fossil preparator Scott Johnston pose with a Tylosaurus proriger fossil jaw.

How a giant predator of prehistoric seas was discovered — twice

After 80 million years, a giant fossil jaw has quite a story to tell. Back in the age of the dinosaurs, Tylosaurus proriger was a fearsome predator — a bus-sized aquatic reptile with a crushing snout, daggerlike teeth, and knack for swallowing prey whole. How its bones wound up at Harvard is a tangled yarn involving a Wild West stagecoach station, the early western railroads, the infamous “Bone Wars” between rival fossil hunters, and a founding scholar of natural history.

At age 101, alum gifts ‘big, geometric, colorful’ artwork to the FAS
David Bakalar stands before one of his Albert Einstein-inspired “Brain Series” paintings, newly installed on the Harvard University campus at Zimmer Hall.

At age 101, alum gifts ‘big, geometric, colorful’ artwork to the FAS

When David Bakalar first set foot at Harvard, he was a 17-year-old child of immigrants commuting by bus from Lynn, Mass., his $500 “nonresident scholarship” covering tuition and a study space at Leverett House but not room and board.

David Reich on migration, mixed ancestries, and ancient DNA
View of a pair of hands in a lab coat and gloves handling tubes labeled “DNA ONLY”

David Reich on migration, mixed ancestries, and ancient DNA

Drawing on data from over 50,000 genetic samples, Reich’s research shows that the people living in a place today are almost never the direct descendants of the people who lived there before.

How the brain decides where to insulate its own wiring
Postdoctoral researcher Nuria Dominguez-Iturza in front of a microscope

How the brain decides where to insulate its own wiring

A new study by takes a step toward illuminating brain development and providing clues that may lead to therapies for devastating neurological disorders.

Leading chemist Jeffrey Long to join FAS faculty
Portrait of Jeffrey Long

Leading chemist Jeffrey Long to join FAS faculty

The leading chemist, who studies porous materials for energy and sustainability, will serve as the inaugural Thomas C. Foley Professor of Energy and the Environment beginning January 1, 2027.