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"We humans do like to insist that we have free will, and that whatever we choose to do is entirely our own decision. But about one third of us are infected with a certain parasite. Usually, if you're not pregnant or immunocompromised, this infection does not cause too many problems. But sometimes, this infection can change your normal behavior, and even increase the chances of schizophrenia and suicide."

"To reduce the severity of his seizures, Joe had the bridge between his left and right cerebral hemisphers (the corpus callosum) severed. As a result, his left and right brains no longer communicate through that pathway. Here's what happens as a result"

The National Zoo is home to 2,000 individual animals of nearly 400 different species. Our best known residents are our giant pandas, but great apes, big cats, Asian elephants, birds, amphibians, reptiles, insects, aquatic animals, small mammals, and many others can be found at the Zoo. You can take a virtual visit to the Zoo any day of the week by tuning into our live web cams, which feature many of the Zoo's animals.

Collection of live animal cams

Can't make it to a zoo? Observe animal habits and habitats using one of the many webcams broadcasting from zoos and aquariums around the United States and the world in this inquiry-based activity that focuses on observation logs, class discussion, questioning, and research. Students begin by viewing an animal webcam, making observations, and describing what they see in a notebook or log.