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Malawi and its neighbors plan to vaccinate 9.4 million children against polio in the coming week to combat a suspected outbreak.

Researchers find a way to wipe out the brain’s immune cell corps and send in new and improved versions.

Researchers find that evolution can operate on extraordinarily fast timescales.

Low participant numbers render the results of many studies based on brain scans unreliable, an analysis finds.

Making specific alterations to the bacterial population in a rat’s lungs either better protects the animals against multiple sclerosis–like symptoms or makes them more vulnerable, a study finds—the first demonstration of a lung-brain axis.

New research finds that the appearance of the HbS mutation, which protects against malaria but leads to sickle cell disease when present in two copies, was more common in sperm samples from men in Ghana, where malaria risk is high, than Europeans.

A new study reveals a network of neurons that, when disrupted, impairs adaptation to new circumstances in several types of dementia.

The first part of 2022 is giving us a glimpse of humanity’s future relationship with COVID-19.

The Scientist spoke to Mount Desert Island Biological Laboratory’s Jim Strickland about the institute’s new MDI Bioscience initiative to perform more drug testing and development in nonmammalian models.

Mongolian rodents join the ranks of earthworms and beavers as known ecosystem engineers.

The Rockefeller University geneticist is tracing the full lifespan of individual cells to better understand how and why humans age.

A seagrass relies on symbiotic bacteria inside its roots to fix nitrogen. This is the first time scientists have demonstrated that this relationship occurs in a marine plant.