New research suggests that Chinook salmon are being run down by a growing population of killer whales.
Orcas are losing their babies at an unprecedented rate. The solution may lie 400 miles away.
Re-visiting animal rights in the wake of SeaWorld's decision to end its orca shows.
Ringling Bros.' decision to retire its elephants has been met with near-universal approval. Why do far fewer people care about the animals being slaughtered on a daily basis?