By Kate Abnett (Reuters) – Brutal heatwaves are gripping both Europe and the United States this week and are forecast to dump searing heat on much of China into late August. In addition to record temperatures, wildfires are raging across southern Europe with evacuations in towns in Italy and Greece. The searing heat is part of a global pattern of rising temperatures, widely attributed by scientists and climatologists to human activity. HOTTER, MORE FREQUENT HEATWAVES Climate change makes heatwaves hotter and more frequent. This is the case for most land regions, and has been confirmed by the U…