Yes Virginia, there are, in fact, ten different kinds of tree kangaroos. Author Sy Montgomery traveled with scientist Lisa Dabek to the ancient cloud forest of Papua New Guinea in search of the Matschie’s Tree Kangaroo. They get up close and personal with this tree-hugging marsupial in the new children’s book “Quest for the Tree Kangaroo"

A new computer program separates fact from opinion in texts. Ian Gray reports.

The Grand Cascapedia River, on the Atlantic coast of Canada, boasts some of the best sport fishing in the world. Its salmon stocks are in great shape and people pay big money for permits to fish there. Hoagy Bix Carmichael, son of the singer-songwriter of the same name, fell in the love with the Cascapedia River. Carmichael took producer Bob Carty fly fishing and talks about the river's unusual history and of concerns for its future.

Even with the closure of the Mojave power plant, coal and coal waste are a major economic force in Navajo country. And as Daniel Kracker reports from Arizona, Navajos have found a new way to use coal plant waste from another power plant. They're making a new kind of concrete that could help solve the reservation's acute housing shortage.

There is a growing body of scientific evidence linking men’s exposure to environmental toxins, such as cigarette smoke or herbicides, to reproductive health problems, and the health of their children. But society and the scientific world alike have been hesitant to accept the evidence, argues Cynthia Daniels in her book, “Exposing Men: The Science and Politics of Male Reproduction.” Daniels is an associate professor of Political Science at Rutgers University and speaks with host Steve Curwood.

A new study from the Centers for Disease Control suggests that long term exposure to low levels of the chemical perchlorate may be hazardous to health, especially to women of childbearing age and children. Host Steve Curwood speaks with Dr. Richard Jackson, a former director at the CDC and professor of environmental health sciences at UC Berkeley.