About half of U.S. drinking water comes from groundwater sources. Regulation and enforcement of industry and agriculture are important for protecting our limited supplies, but consumers must also play a role.
Dear EarthTalk: I have heard that fracking is becoming a major environmental issue in the U.S. Which parts of the country are already hosting fracking operations? Are there efforts underway to stop the practice in specific states or across the country?
Dear EarthTalk: I heard that the Arctic summer sea ice is at its lowest level since we began recording it. What are the implications of all this melting?]
Dear EarthTalk: How eco-friendly are professional sports leagues and their teams? Which stand out especially for their green efforts? -- Al Simpson, Medina, OH
According to the Center for Biological Diversity, lead is an extremely toxic element that is entering the food chain through widespread use of lead hunting ammunition and fishing tackle, poisoning wildlife and even threatening human health.
Dear EarthTalk: What's the big deal about lead in hunting ammunition and fishing tackle? If an animal is going to die anyway, it's not going to get lead poisoning, right?
Dear EarthTalk:Besides the presidential election,what other electoral races are environmentalists keeping an eye on this coming November? --Matt Sloan, Sacramento, CA
