Astronomers explain origin of elusive ultradiffuse galaxies

As their name suggests, ultradiffuse galaxies, or UDGs, are dwarf galaxies whose stars are spread out over a vast region, resulting in extremely low surface brightness, making them very difficult to detect. Several questions ...

Hummingbirds can smell their way out of danger

In less time than it takes to read this sentence, hummingbirds can catch a whiff of potential trouble. That's the result of new UC Riverside research showing, contrary to popular belief, the tiny birds do have an active sense ...

New book explores how plague shaped Christianity in the Americas

During the first century of American colonization, as many as 20 million people in Mexico perished from disease, violence, and exploitation. Jennifer Scheper Hughes, a professor in the Department of History at the University ...

Leader effectiveness may depend on emotional expression

Women leaders must often battle sexist stereotypes that label them "too emotional" for effective leadership. A surprising new study shows that when they express calm, happy emotions, however, women are perceived as more effective ...

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