Too much self-confidence can endanger health

Older people who overestimate their health go to the doctor less often. This can have serious consequences for their health, for example, when illnesses are detected too late. By contrast, people who think they are sicker than they actually are visit t…

Discovery could lead to better cancer immunotherapy

A type of white blood cell previously known only as a helper in the immune system appears also to be the instigator of the body’s defenses against cancerous tumors. The discovery could lead to more effective cancer immunotherapy, a promising treatment …

The history of Lake Cahuilla before the Salton Sea

Lake Cahuilla went through many cycles of filling and drying out over thousands of years. A new study by a San Diego State University researcher and colleagues used radiocarbon dating to determine the timing of the last seven periods of filling during …