What's going on in Flint, Michigan, is just the tip of the iceberg when it comes to lead in our water supply and in our environment.What's going on in Flint, Michigan, is just the tip of the iceberg when it comes to lead in our water supply and in our environment. 

Many other communities have lead levels higher than acceptable. 

We're being exposed to small amounts of lead on a regular basis. The exposure is more intense in large cities.

Even though lead exposure has been determined "safe" by the EPA's standards, it's still doing harm.

Dr. Stewart Lonky, an expert in toxic exposure, joins hosts Andrea and Lisa to discuss the many dangers of lead, including a link to violent behavior.