STACEY VANEK SMITH, HOST:
Most of us have heard of saving the elephants or saving the polar bears, but what about saving their parasites? Scientists are increasingly finding that parasites are a key part of ecosystems, and many are at risk of extinction. NPR's Lauren Sommer explains.
VANEK SMITH: When your job is to study parasitic worms, not everyone wants to hear what you do for a living.
CHELSEA WOOD: It's not a popular topic of conversation at cocktail parties, I can tell you that.