Jane Goodall

Ken and Rosie are 30-year-old chimpanzees that were born in research labs and have spent most of their lives in labs dedicated to finding cures for human diseases. The use of chimpanzees in invasive medical research has long been debated. Primatologists like Jane Goodall argue against the use of chimpanzees in medical research, while some researchers say testing is crucial and has saved human lives. Lisa Myers reports.

Famed primatologist Jane Goodall visited Fauna Sanctuary oustide of Montreal, Canada. Goodall was reunited with former lab chimpanzees that she helped rescue from a lab in New York. The sanctuary is home to 12 chimpanzees. Lisa Myers reports.

Rock Center received unprecedented access to the Texas Biomedical Research Institute in San Antonio, Texas where chimpanzees are being experimented on to find a cure for Hepatitis C, a potentially deadly virus affecting four million Americans. Scientists at the lab say that testing on chimpanzees saves human lives. But world-renowned primatologist, Dr. Jane Goodall, says that testing on chimps is morally wrong, and that it's time to retire these chimps to a sanctuary. To see what retirement looks like, Rock Center visits the National Chimpanzee Sanctuary in Louisiana, Chimp Haven. NBC News Senior Investigative Correspondent Lisa Myers full report airs Monday, Jan. 30 at 10 pm/9c on NBC s Rock Center with Brian Williams.

First, witness the great wildebeest migration in Kenya; then, listen to the secret language of elephants in Central Africa; lastly, visit with Jane Goodall in the forests of Tanzania. Watch "60 Minutes Presents: Into the Wild," a special hour devoted to the natural world, on Sunday, Jan. 22 at 7 p.m. ET/PT.