By Sarah de Sainte Croix, Senior Contributing Reporter
RIO DE JANEIRO, BRAZIL – In the North of Brazil, scientists have discovered evidence of a huge, 6,000 kilometer long, subterranean river running four kilometers (almost 2.5 miles) below the surface and following the course of the Amazon River. The discovery was made by a team of scientists from Brazil’s National Geophysics Observatory, lead by Dr. Valiya Hamza.
The underground river, like its surface-level counterpart, flows East to West, originating in . . .