In Sierra Leone, only 1 percent of rural citizens have access to electricity. Easy Solar, founded by graduates of Columbia’s School of International and Public Affairs, hopes to change that.
sub-Saharan Africa Archives - State of the Planet
Earth Institute agricultural scientist Pedro A. Sanchez argues in a new essay that new developments in both science and politics give him hope that sub-Saharan Africa will be able to feed itself by 2050, even with a projected population by then of about 2 billion people.
Innovations in the 2014 EPI include a new wastewater treatment indicator; a new approach to climate change indicators; and two new satellite-derived indicators for air quality and forests.