For years, scientists have tried to figure out what's killing honeybee colonies.
One of the most important ingredients for an organic garden is the potting mix used when starting seeds and growing transplants.
Congress is looking to make changes in the way that toxic chemicals are regulated.
Some chemicals are getting into drinking water, and it's not so easy to get them out.
You have flame retardant chemicals in your body. They're toxic. Americans have the highest levels of anyone in the world.
This is what the Chinese call the Year of the Tiger, but there's not much to celebrate among those who care for the big cats.
Listen to the entire program: What Household Toxins Could Mean For Our Health; Getting Chemicals Out of Drinking Water; The Push and Pull