Cooler temperatures helped firefighters yesterday stabilize a wildfire in northwestern Spain. The fire in the Sierra de Culebra mountain range in Zamora province has burnt 31,000 hectares so far. The state news agency Efe said that made it the biggest on record since a fire in southwestern Huelva province razed just under 30,000 hectares in 2004. <br />''<br />'' Experts link the abnormally hot period for Europe to climate change. <br />''<br />''<span style="color: #222222;"> In Germany, heavy showers overnight helped  extinguish two big forest fires in the southwest of Berlin. Officials said hundreds of people were able to return to their homes after being evacuated as a precaution over the weekend. </span><br />