In the face of rising programming costs and dwindling advertising fees, the American Idol network, like its rivals, is looking to extract a fee for a signal that was once free.
Eliminating free radical production would involve completely redesigning aspects of our metabolism, especially the way we use oxygen to extract energy from food.
Low-mercury and mercury-free methods are available, but socio-economic factors often act as barriers to miners adopting these alternative ways to extract gold, the authors add.
Neel Sundaresan, a senior director at the labs, says the economists are analyzing the incentive effects of free shipping, the profit impact of including more photos on sellers' listings and the ability of reputable sellers to extract a premium from buyers.