SYDNEY, Australia (AFP) — Shipping, pollution and over fishing have reduced areas of “wilderness” to just 13 percent of the world’s oceans, a study showed Friday, warning untouched marine habitats could completely vanish within half a century. International researchers analyzing the impact of human activity, from fertilizer runoff to increased sea transport, on underwater ecosystems have mapped the dwindling zones considered pristine. The bulk of remaining ocean wilderness, classed as “mostly free of human disturbance”, […]