Gidden Zeis/The Nature Conservancy
In the animal kingdom, love can be a grim matter. Each year, for example, salmon swim upstream to the site of their freshwater birth to spawn and die not long after, never to see the open water again.
For Valentine's day this year, the Nature Conservancy of California is celebrating those animals that are willing to die--or kill--for love. Off-Ramp producer Kevin Ferguson talked with Larry Serpa, an ecologist with the Nature Conservancy.