Faced with a rat trapped in a restrainer, a free rat opens the trap's door to liberate the trapped animal (while stepping on its head — "very rat-ish behavior," says University of Chicago neurobiologist Peggy Mason).
David Christopher/University of Chicago
This light micrograph from the brain of someone who died with Alzheimer's disease shows the plaques and neurofibrillary tangles that are typical of the disease. A glitch that prevents healthy cell structures from transitioning from one phase to the next might contribute to the tangles, researchers say.
Jose Luis Calvo/ Science Source
A researcher at Peking University's Beijing Advanced Innovation Center for Genomics conducts tests on May 14. Scientists are confronting their biases and learning to engage with science from places they're unfamiliar with.
Wang Zhao/AFP via Getty Images
In 2009, Australia's deadliest bushfires on record destroyed Kinglake, a town just over an hour's drive northeast of Melbourne. The disaster had long-term effects on families.
A flooded street in Orange, Texas in 2017. Climate-driven extreme rain and sea level rise, coupled with development in flood-prone areas, have led to more competition for limited federal flood mitigation dollars.
Scott Olson/Getty Images
Dental offices have begun seeing patients return for routine procedures. Seattle dentist Kathleen Saturay has increased the layers of protective equipment she wears when treating patients.