Dear EarthTalk:  I’ve been hearing about the popularity of milk sold in bags (as opposed to plastic or cardboard cartons) in India, Europe and Canada. What are the environmental advantages to milk in bags, and do you think it will catch on in the U.S.? And what other options are out there for milk...

Dear EarthTalk:  I work for an office equipment company selling copiers, fax machines, computers and printers. Each year new models come out making old ones obsolete. As a result, we have loads of trade-ins with nowhere to go. What can we do with this old equipment? — Jeff P., Worcester,...

Food waste is a huge issue in America, especially in light of the growing divide between the profligate rich and the hungry poor. According to the U.S. Department of Agriculture’s Food Loss Project, we throw away more than 25 percent—some 25.9 million tons—of all the food we produce for domestic sale...

Dear EarthTalk: What is the current status of whales? How effective is the International Whaling Commission and which countries are involved in illegal whaling? — Jonathan Wingate, Yulee, FL Some larger whale species have been recovering since the dark days before the whaling industry was regulated,...