Frans de Waal (1948-2024). (https://pubmed.ncbi.nlm.nih.gov/38662812/)

These scientists, a primatologist who brought animals and humans "a little closer," conducted a study to learn more about how monkeys communicate with each other. They observed a group of monkeys in the wild and recorded the sounds they made. Then, they analyzed the sounds to see if the monkeys were using different calls to talk about different things, like finding food or warning each other about danger. By studying the monkeys' communication, the scientists were able to understand more about how these animals interact and help each other in their natural environment.

Brosnan SF. Frans de Waal (1948-2024). Science. 2024 Apr 26;384(6694):387. doi: 10.1126/science.adp4966. Epub 2024 Apr 25.