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Oregon Field Guide

Contaminated Ballast

OPB | Feb. 1, 1991 7:30 p.m.

An Oregon scientist watches for microscopic stowaways in the ballast water of ships.

Oregon Field Guide

High Lakes Fish Stocking

OPB | Feb. 1, 1991 7:30 p.m.

Report on the use of helicopters to stock high mountain lakes and why some are against it.

Oregon Field Guide


OPB | Feb. 1, 1991 7:30 p.m.

Opossums are an introduced species in Oregon that have been getting a bum rap for years.

Oregon Field Guide

Buffalo Ranching

OPB | Feb. 1, 1991 7:30 p.m.

A rancher near Umatilla raises buffalo for meat and breeding.

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Diving For Science (2411)

January 14, 8:30 p.m. [OPB TV]

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Major Support Provided By: Dorothy D. Gage

Additional Support Provided By: the Coit Family Foundation, Fred and Clara Dolen Charitable Foundation, Kay Kitagawa and Andy Johnson-Laird, Christine and David Vernier, and the Greenfield/Hartline Habitat Conservation Fund of the Nature Conservancy.

Special thanks for support by: The Roundhouse Foundation, Jon and Nancy Decherd, Bonnie and Peter Reagan