Crops take global warming hit
One of the few silver linings is fading as the ominous cloud of global warming comes into clearer view. Previous research involving greenhouse experiments suggested that the damaging effects of higher temperature and lower soil moisture on agriculture from global warming could be offset by the fertilizing effect of increases in carbon dioxide. A study based on open-field experiments shows that the carbon dioxide benefit is only half as great, leaving the world with a net loss in the global warming-agriculture equation.