Assignment Earth: Interstate wildlife

Video: Researchers monitor underpass crossings to determine if grizzly bears and other animals can cross the roadway safely.

Prius still a hit in Hollywood

Video: Despite the recall, green cars will continue to shuttle the environmentally conscious to Oscar gold. KNBC's Ted Chen reports from Hollywood.

Watch Audi's eco-friendly Super Bowl ad

Video: Audi's Super Bowl ad featured the band Cheap Trick, the Audi A3 TDI clean diesel, and the debut of the Green Police.

Toyota recalls 270,000 Priuses

Video: Toyota is extending its safety recall to the Prius, citing possible brake problems in 270,000 of the popular hybrid cars. NBC's Tom Costello reports.

Obama creates new jobs by investing in high-speed rail

Video: President announces $8 billion in funding for high-speed rail projects that will provide faster, more energy-efficient travel and create new jobs.

Tata's tiny car generates buzz in Detroit

Video: CNBC reports on a new car that is generating a lot of buzz at the Detroit Auto Show, and only costs $2,500.

In the Green Room: Jason Mraz on touring green

Video: Jason Mraz talks about touring green with Chuck at Farm Aid.

Ecollywood: Amanda Seyfried and Olesya Rulin

Video: Get your green tips from Amanda Seyfried and Olesya Rulin.

Electric bikes that run by themselves

Video: A Georgia company called Worldwide Electric Bikes explains how magnets help their bikes go round. And no pedaling required.