A 2-year-old girl in northern China has tested positive for bird flu and is in critical condition – the second case of human infection in a month.

Dropping temperatures in winter may cause an unhealthy rise in high blood pressure among the elderly, according to a new study linking cooler temperatures with higher blood pressure.

What began as an investigation of peanut butter shipped to U.S. nursing homes and cafeterias has broadened, as Kellogg’s recalls 16 products and federal officials confirming salmonella contamination at a Georgia facility.