Other Environmental Impacts
Why Renewables Can’t Save the Planet
Dealing with energy sources that are inherently unreliable, and require large amounts of land, comes at a high economic cost.
Why “Green” Energy Is Futile, In One Lesson
Yesterday central Minnesota experienced a natural gas “brownout,” as Xcel Energy advised customers to turn thermostats down to 60 degrees and avoid using hot water. Xcel put up some customers in hotels. Why? When the wind isn’t blowing–as it wasn’t yesterday–natural gas supplies the electricity. It also heats homes, and with bitter cold temperatures and no wind, there wasn’t enough natural gas to go around. The resulting “brownout” has been a political shock in Minnesota.
The Down Side to Wind Power
The Harvard Gazette
In two papers — published today in the journals Environmental Research Letters and Joule — Harvard University researchers find that the transition to wind or solar power in the U.S. would require five to 20 times more land than previously thought, and, if such large-scale wind farms were built, would warm average surface temperatures over the continental U.S. by 0.24 degrees Celsius.
Large wind and solar farms in the Sahara would increase heat, rain, vegetation
University of Illinois at Urbana-Champaign
Wind and solar farms are known to have local effects on heat, humidity and other factors that may be beneficial — or detrimental — to the regions in which they are situated.
Wind energy may be green, but the water in Chatham-Kent is brown
The vibrations — from pile driving, and later, from the turbines’ operation — create waves like the ripples that fan out in water when people throw rocks into a pond. When the waves from different turbines intersect, they can either cancel each other out, he says — or amplify the effect.
“If you have a well at that intersection where waves are really reinforcing each other,” it means the shale at the base of the well is being shaken as hard as it would be in an earthquake. That kicks up the particles, and you’re “going to see your water go a [dark] colour.”
Interspecific effects of forest fragmentation on bats
Canadian Journal of Zoology
J.L. Segers, H.G. Broders
Wind-farm development may be an important contributor to forest fragmentation, but how such developments impact bats is poorly understood.
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