By Roberta Attanasio All the activities we carry out online come with an environmental cost—no, it’s not only the relatively small amounts of carbon dioxide emitted because of the energy it takes to run our own multiple devices and power wireless networks. Rather, it’s the large amounts of CO2 emitted by the energy intensive high-end servers and data centers that usually sit in places we almost never see. Think of large facilities consisting of agglomerates of technical equipment, power subsystems, uninterruptible power supplies, ventilation and cooling systems, and so on.   Now, results from a new study (The overlooked environmental footprint of increasing Internet use), show the environmental impact caused…