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The fact that a problem already exists in nature does not justify further exacerbating the problem. Their net climate change impact can only be considered clos
by twojacobtwo 5y ago
The fact that a problem already exists in nature does not justify further exacerbating the problem.
Their net climate change impact can only be considered close to zero when considered as offset fossil-fuel based sources. If they're emitting large amounts of methane and CO2 (until we get net 0 concrete), it seems extremely unlikely that the impact is close to 0.
- Retric 5y agoThey don’t make it worse because dams aren’t generating organic matter. Organic matter that falls into rivers is going to break down either way, and in a free flowing river it’s often going to break down where the water slows down in estuaries. Essentially you need to subtract the methane that would have been produced in other locations. In terms of concrete, the percentage of concrete produced worldwide that ends up in dams is minuscule. Only 34 states even have any hydroelectric dams. The US alone is producing 90 million metric tons per year, look for the most recent large hydroelectric dam in the US it wasn’t produced in 2021, or 2020, or 2019, or …