Dukasaur wrote:Whether the shale oil is extracted was not dependent on the pipeline.
I understand all of what you are saying.
That said... if you build the pipeline it will impact flow, since once you build the pipeline it has to remain full. Even during times of lower oil prices. When oil prices are lower, then can reduce flow of rail trucks more easily.
In general, I'm looking for less oil.
I'm not saying every pipeline it bad. I am saying this one, based on the fact the source is shale/sand tar oil, it's length, and general opposition; is probably bad.
Dukasaur wrote:Every wind turbine, between the concrete pad it sits on, its transmission line, its access road, and its drainage system, takes 4 acres of land.
Source? That seems extremely high.
I'm guessing that is a high number and there are many factors; including type of turbine, location; type of land it's built on, etc. that would factor into this. I see turbines locally that do not use less tan a quarter acre.
Dukasaur wrote: Either that's good pristine wilderness being ruined, or it's good agricultural land being taken out of circulation.
Not if they are distributed, small batches or located in urban areas. Could be "bad" land too. Deserts? On old landfills?
Dukasaur wrote:Good exploitable windy areas are usually also good bird migration paths, and the famous wind farms are referred to as bird cuisinarts.
This is a problem. There are other problems with turbines. Low-frequency sound vibrations can cause health problems. I'm not saying alternative sources are perfect. I'm saying we need more investment... which includes R&D.
Dukasaur wrote:Good solar areas are usually in sensitive desert ecosystems, and for small amounts of energy they remove lots of habitat for desert plants and animals, many of which are threatened to begin with.
Not necessarily. There are a lot of solar farms sprouting up around me on former landfills and unused (old) cranberry bogs. The land under the panels becomes good ecological wetlands for small wildlife.
Dukasaur wrote:Both wind and solar require LOTS of metal alloys that burn a lot of energy to manufacture. We clap ourselves on the back for making "clean" energy here in North America...
I am not a scientist, I realize thought there are lots of hidden costs. It's not always clear which way is better for the environment. I could use paper-v-plastic bags; or disposable-v-cloth diapers as two examples where the full costs are not usually calculated by most people.
Dukasaur wrote:but the alloys for those blade arms solar cells are made with "dirty" energy in China. For a hefty pricetag, we're essentially exporting pollution to China.
Sounds like a win-lose to me.

We can keep polluting China. I don't care.
I would prefer we re-import the manufacturing to the USA though.
Dukasaur wrote:Fusion, if it ever arrives, should be mostly clean, but so far despite fifty years of determined research we haven't found the key.
OK. Keep researching. Take some of that pipeline money and put it into more research.
Dukasaur wrote:Fission is relatively clean, but that's only as long as everything goes well and there's no accidents. There's now been enough nuclear accidents in the world that we can say with some confidence that there will eventually be more.
Agreed. Still we shouldn't abandon this source.
Dukasaur wrote:Most hydroelectric projects involve damming up river watersheds, disrupting fish and animal migration paths, and submerging huge areas of land. The James Bay projects in Quebec submerged almost 5,000 square miles of mature forest. You could drop the entire nation of Switzerland into the James Bay reservoirs. Similar stories exist elsewhere. Huge swaths of land lost along the Ob and Yenisei. 500 square miles here, 500 square miles there, and soon it's in the tens of thousands. There are other costs besides environmental. The Ilsu dam in Turkey is going to cost us 400 archaeological sites, including some of the oldest towns on earth.
There are other benefits of dams too. They can be used to help increase potable water availability.
Obviously there are impacts and these need to be considered / addressed.
Dukasaur wrote:Tidal forces are enormous, but again, you can't dam the sea without enormous environmental impacts... one is suspicious about the alleged harmlessness of tidal power. All of the other methods discussed above sold themselves as harmless at one time or another.
Agreed.
Dukasaur wrote:Really, there's no solution for the environmental cost of energy other than using less of the stuff. There's still some room for improvement there, but as long as the population keeps growing there's ultimately no hope. If we all use 50% less energy, but the population doubles, we're back to where we started. In the meantime, I suppose keeping the price of oil high keeps the pressure on to look for solutions, but moving shale oil around on crash-prone rail cars instead of (relatively) safe pipelines is a poor investment.
Agreed. Ultimately world population is the driving force.
Though I'm a proponent of higher taxes on energy (all kinds)... with the caveat that that tax money goes towards things like energy research, environmental impact studies, and environmental clean-up / preservation.