WASHINGTON, United States (AFP) — The last four years have been the world’s hottest since record-keeping began, with 2018 the fourth warmest on record, according to data published Thursday by US research group Berkeley Earth. Temperatures in 2018 were around 1.16 degrees Celsius (2.09 degrees Fahrenheit) above the average temperature of the second half of the 19th century, from 1850-1900, often used as a pre-industrial baseline for global temperature targets. “Global mean temperature in 2018 […]