In 2014 the world's oceans swelled, major greenhouse gases that fuel global warming hit record highs and the planet's surface temperature reached its hottest point in 135 years, international researchers said Thursday. "If we were to freeze greenhouse gases at their current levels, the seas would actually continue to warm for centuries to millennia," said oceanographer Greg Johnson of the National Oceanic and Atmospheric Administration Pacific Marine Environmental Laboratory. "And that means as they warm they expand, and sea level would continue to rise."

Greenhouse gases hit record highs in 2014. (2015, July 18). Philippine Daily Inquirer, p. A20.