Wyoming

Oil Train Concerns in the Pacific Northwest

Plans are underway to build several port terminals in the Pacific Northwest that would transfer North Dakota oil from trains onto ships bound for West Coast refineries, but the recent oil train disaster in Quebec may put the brakes on the proposed projects.

Conflict & Justice

Strands of Evidence: Hair Forensics

What you eat ends up in your hair. Scientists in the US and Europe have used this basic idea to devise a sort of hair-based GPS tracking system. Law enforcement agencies are now using this technique to solve crimes. NOVA's Ari Daniel Shapiro reports.