Tracks on the Oregon Trail

Horizon investigates the environmental protection program going on in the state of Oregon in the USA. Oregon is the first state to clean up it's environment.

Other episodes for this season

The Forever Fuel
Episode 1 - The Forever Fuel
In Search of Pegasus
Episode 2 - In Search of Pegasus
The Keys of Paradise
Episode 3 - The Keys of Paradise
Sweet Solutions
Episode 4 - Sweet Solutions
Bronze Age Blast-Off
Episode 5 - Bronze Age Blast-Off
The Real Bionic Man
Episode 6 - The Real Bionic Man
A Mediterranean Prospect
Episode 7 - A Mediterranean Prospect
Elements of Risk
Episode 8 - Elements of Risk
Mr. Ludwig's Tropical Dreamland
Episode 9 - Mr. Ludwig's Tropical Dre...
Where Nothing Happens Twice
Episode 10 - Where Nothing Happens Twi...
Journey Through the Human Body
Episode 11 - Journey Through the Human...
The Fight to Be Male
Episode 12 - The Fight to Be Male
The Robots Are Coming
Episode 13 - The Robots Are Coming
Mexican Oil Dance
Episode 14 - Mexican Oil Dance
Tracks on the Oregon Trail
Episode 15 - Tracks on the Oregon Trail
The Race to Reshape Cars
Episode 16 - The Race to Reshape Cars
Dragnet for Diabetes
Episode 17 - Dragnet for Diabetes
The Lost Waters of the Nile
Episode 18 - The Lost Waters of the Ni...
Survival of the Fastest
Episode 19 - Survival of the Fastest
A Touch of Sensitivity
Episode 20 - A Touch of Sensitivity
A Treasury of Trees
Episode 21 - A Treasury of Trees
Darkness Visible
Episode 22 - Darkness Visible
Uranium Goes Critical
Episode 23 - Uranium Goes Critical
The Fat in the Fire
Episode 24 - The Fat in the Fire
Decade
Episode 25 - Decade