Higher temperatures and more intense storms are also linked to "valley fever", a disease contracted from a fungus in the soil of the central valley of California.
Margaret GatzMargaret Gatz, a psychologist at the University of Southern California, Los Angeles, is investigating the causes of Alzheimer's disease.
玛格丽特·盖兹，是洛杉矶南加州大学的心理学家，她正在研究患上阿尔茨海默氏症的原因。
3
Harvard and the University of California at San Diego, who report in the British Medical Journal online that happiness spreads among people like a salubrious disease.