
77Multidimensional Challenges to Human Sustainability
anomalous rise in Arctic temperature may lie in the ocean conveyor currents
carrying heat north through the Bering Strait from the Pacic Ocean and the
currents through the Greenland and Barents Seas from the Atlantic.
In agricultural areas undergoing GW-induced drought, crops will be
shifted from irrigation-requiring crops like maize and soybeans to xero-
phytes such as Miscanthus sp. and switchgrass for cellulosic ethanol (fuel)
production and Crambe abyssinica as a biodiesel source. Genetic engineering
is being used to make common crops drought resistant, such as corn (