IB 105 Lecture 22: Week 11.2 IB105
2 Dec 2016
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Document Summary
Reservoir construction causes significant environmental and social damage. Loss of farmland: community relocation, reduction of nutrient-rich silt leading to loss of wetlands, changes to the hydrology of the river. Being quickly adopted world wide and generates about 4% of the energy in the us. Cost for electricity generation becoming competitive with fossil fuel sources. Land around windmills can sometimes still be used for grazing or farming. Problems with wind: killing of migratory birds and bats (especially bats, needs a significant amount of space, wind distribution is not even throughout the u. s. Wave energy/tidal energy: very new technology, benefit: the majority of human population lives close to shores. Still little research on the effects this has on the environment. Sustainable for the foreseeable future: not widely used. I(cid:272)ela(cid:374)d ge(cid:374)erates 25% of it"s e(cid:374)ergy this way. Much of our current transportation requires liquid fuels- biofuels is the only renewable resource that provides this ability.
