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 say.

The findings are contained in the 2014 State of the Climate report, a peer-reviewed study published on Thursday that examines temperature, precipitation and weather events around the world. A total of 413 scientists from 58 countries around the world contributed to the report, the 25th in a series that is…