Seven years ago, researchers at Stanford University started an ambitious experiment: They began growing miniature, simplified versions of the human brain from stem cells inside a lab, then later ...

For centuries, rats have thrived in cities because of human behavior. In response, humans have blamed the rats and developed techniques for poisoning them. We research urban rat populations and ...

Rats with naturally high stress levels were far more likely to self-administer cannabis when given access. Behavioral testing showed that baseline stress hormones were the strongest predictor of ...

It isn't just people—when given the chance, rats may also use cannabis to cope with stress, according to a study by ...

WSU researchers found that rats with high levels of natural stress hormones were far more likely to self-administer cannabis ...

We crafted our first rodent car from a plastic cereal container. After trial and error, my colleagues and I found that rats could learn to drive forward by grasping a small wire that acted like a gas ...

Animal activists acknowledged New York City's growing rat problem but blamed the rodent infestation on "disgusting human behavior" and condemned plans to kill them. "I don’t think any of us want to ...

Rat Czar Kathleen Corradi says although city agencies are on the front line, it's key for New Yorkers to get educated. Rats seem to be everywhere across the city, and agencies across the boroughs say ...

Scientists have discovered for the first time that invasive rats on tropical islands are affecting the territorial behavior of fish on surrounding coral reefs. The new study shows that the presence of ...

The researchers injected the human tissue into the rats’ somatosensory cortexes — regions that receive and process sensory information like touch or pain. After about two weeks of training, the rats ...

Rats' Behavior Changed After Human Tissue Was Inserted Into Their Brains, Research Finds Studying human neurons inside rat brains could help researchers learn more about psychiatric disorders and how ...