The report warned that the spillover from global climate change could be increased migration and water-related disputes, Fingar said.

NPR: Linking Climate Change, National Security

What's more, the parts of the world where populations are growing fastest are also those most vulnerable to climate change, and a rising population will exacerbate the consequences of global warming water shortages, mass migration, declining food yields.

ECONOMIST: Demography, growth and the environment

Many dams on the list impeded fish migration and degraded water quality.

CNN: Study opens floodgates on dam removal

Even if migration of hydraulic fracturing fluids into water aquifers were possible, hydraulic fracturing fluids are typically 90% water, 9% sand, and less than 1% other compounds, many of which are common household products that appear in foods anyway.

FORBES: The Sierra Club Fails An Environmental Consistency Test

The second is that there may have been back-migration into Africa to muddy the genetic water.

WSJ: Matt Ridley on Early Humans Leaving Africa | Mind & Matter