Voice of America: The United Nations says surging carbon dioxide emissions sent greenhouse gases in the atmosphere to record levels last year.
In its annual report on greenhouse gas concentrations released Tuesday, the World Meteorological Organization (WMO) said carbon dioxide levels between 2012 and 2013 marked the largest yearly increase since reliable global records began 30 years ago.
A large percentage of carbon dioxide emissions are absorbed by the oceans.
In a statement accompanying the report, WMO...