In South Africa, the composition of droppings varies by species’ body sizes, and which animals are found where depends on vegetation density.

Knock-on effects of melting sea ice in the Arctic may be to blame for a spate of gray whale deaths along their migration route from Mexico to Alaska.

The release of gray wolves in Yellowstone decades ago still stands as one of the few examples of a predator reintroduction, and the lessons learned continue to be debated. New projects aim to do it again.

After weeks of training, the muscles of two macaques exhibited greater responses to stimulation of the reticulospinal tract in the brain stem than they had before, suggesting that strengthening the neural pathway is key to getting stronger. 

Changes in blood levels of oxytocin and adrenocorticotropic hormone and patterns of neural activity predict how much money people will donate to a cause with high accuracy.

Illinois-based Surgisphere Corporation had a brief moment in the limelight this year following its infamous study of hydroxychloroquine. But the impact of the company’s deception reverberated across world.

Several routes exist for immune cells to communicate with neurons in the central nervous system, though T cells rarely come in direct contact with neural tissue.

Understanding this complex and still largely enigmatic process will pave the way for researchers to control the development of new morphologies.

The gene BCO2 enables male and female members of some bird species to display dramatically different color patterns.