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: The federal government recently designated the Connecticut River watershed as the nation’s first “National Blueway.” What is a National Blueway and does such a designation come with any funding for conservation or other purposes?
Dear EarthTalk: The world added its seven-billionth person in 2011, but the news came and went quickly while Charlie Sheen news kept on and on. But isn’t population growth the “elephant in the room” that needs serious attention? Can you outline the major impacts of unchecked population growth and what if anything is being done to try to arrest it? -- Aaron Rodriguez, Tucson, AZ
Dear EarthTalk: In recent years the hotel industry began to green up operations, but has it yet gone beyond leaving out little cards to encourage you to re-use your towels and linens?-- Mason Singer, St. Louis, MO