Ebola virus, hantavirus and the pathogen that causes Covid-19 likely jumped from animals to humans. So do these viruses — and scientists say climate change is speeding their spread.

© Sebastián López Brach for The New York Times

In Mato Grosso, Brazil, capybaras wandered into the building, but they were polite during the incursion.

© Nayara Bueno, via Associated Press