Dear EarthTalk: I hear there’s a greener form of fracking for natural gas and oil that uses carbon dioxide instead of water to access underground reserves. Is this really better for the environment? — Jason Burroughs, Erie, PA
Dear EarthTalk: I understand the Navy is doing sonar testing and training in the oceans and that their activities will likely kill hundreds if not thousands of whales and other marine mammals. What can be done to stop this? — Jackie Bomgardner, Wilton, CT
Dear EarthTalk: I work for the Gap and know firsthand the amount of waste that’s produced at my store. Can you suggest ways retail stores can reduce waste? And how can I get a conversation started with the people upstairs about recycling and being less wasteful? — Name withheld, via e-mail
Dear EarthTalk: While working to protect public land from resource extraction and development seems to be the focus of many environmental groups, what is being done to preserve and protect private property—the majority of our land—across the country?