Here's what hasn't changed: People believe the science they want to believe. Some think all forestry is unsustainable. Other's freely admit that renewable heating is possible with wood as long as wood harvests don't outpace forest growth. There's ample proof that forests in the United States are not being over-harvested. On the contrary, there is a significant problem, especially in the Northeast, with lost markets for wood that would be used as fuel. This is one of many factors leading to lost forests due to development and conversion to agriculture. It is the age-old if you don't use it you lose it syndrome.