Jun 19, 2011
In 1904, Italy’s Prince Piero Ginori Conti became the first person to use thermal energy from within the earth to turn on the lights—five of them, to be precise. Now, more than a century after his experiment, 24 countries are using geothermal power. The 10,900 megawatts of capacity installed worldwide generate...
Jun 11, 2011
One key component of the Plan B climate
stabilization strategy is solar
energy. Solar is even more ubiquitous than wind
energy and can be harnessed with both solar photovoltaics (PV)
and solar thermal collectors.
Solar PV—both silicon-based and thin film—converts sunlight directly into electricity. The growth...
Jun 7, 2011
A new scramble for Africa is under way. As global food prices rise and exporters reduce shipments of commodities, countries that rely on imported grain are panicking. Affluent countries like Saudi Arabia, South Korea, China and India have descended on fertile plains across the African continent, acquiring huge...