An international collaboration led by a University of Pennsylvania anthropologist has shown that environmental factors, like temperature and light, play as much of a role in the activity of ...

The best rewards are often distant and can only be achieved by planning and decision-making over several steps. We designed a multi-step choice task in which monkeys followed internal plans to save ...

Researchers have identified a new-to-science subspecies of diademed monkey in Tanzania’s Lake Manyara region. Much of the animal’s known range falls inside protected areas including Lake Manyara ...