People’s Daily: Global warming is an irrefutable fact to date, and the pace of global warming has sped up in the past 50 years. Latest observation data show that the average temperature of the Earth’s surface has risen by 0.74 degrees Celsius in a century between 1906 and 2005, and the average Northern Hemisphere temperatures during the second half of the 20th century was likely the warmest in the 50-year period of the last 1300 years, according to Dr. Liu Hongbin from China’s National Climate …