Nor can they compare to the power density of sources like natural gas, oil and nuclear.

FORBES: Magazine Article

Moreover, with the exception of the continent's handful of natural resource-rich, low population-density countries like Angola (see my September 9, 2008 column advocating an intensified strategic engagement with the geopolitically significant Southern African country), most of America's would-be partners are constrained by lack of the financial wherewithal to upgrade their capabilities to meet even short-term priorities.

CENTERFORSECURITYPOLICY: A stimulus for African security

While conspiracy theorists may want to believe that Big Oil, Big Coal and Big Nuclear are stifling the growth of renewables, the simple truth is that coal, oil, natural gas and nuclear can satisfy the Four Imperatives: power density, energy density, cost and scale.

FORBES: Magazine Article

Population density not only increased the vulnerability of urban centres but magnified the impact of natural disasters, delegates heard.

BBC: NEWS | Science/Nature | Losing sight of the countryside