The great unmentionable, and the Red Queen.
Sheppard
C R C
CR
D003247:Conservation of Natural Resources; D004463:Ecology; D004777:Environment; D017752:Greenhouse Effect; D006801:Humans; D011050:Policy Making; D011157:Population Dynamics; D012924:Social Conditions; D014876:Water Pollution / Q000517:prevention & control*