Voice of America: Researchers meeting in Cameroon say Africa may lose up to 30 percent of its animal and plant species by the end of the century due to global warming, population growth and unregulated development. The researchers from 20 African, American and European universities say sub-Saharan Africa is losing forest land faster than any place on Earth. Loggers are cutting down trees to meet unrelenting timber demand from China, Europe and the United States. Meanwhile, countries are recording 3 percent population...