The U.N. says that a combination of global warming and a strong El Nino have contributed to making 2015 the warmest year since the 600s. CBSN’s Contessa Brewer has more on the climate trends. Source
The U.N. says that a combination of global warming and a strong El Nino have contributed to making 2015 the warmest year since the 600s. CBSN’s Contessa Brewer has more on the climate trends. Source