A new study has shown that the infectious agent responsible for malaria, the Plasmodium parasite, is able to to sense and actively adapt to the host's nutritional status.

While the negative health and environmental effects of mining and burning coal are well documented, simply transporting and storing coal can also adversely affect the health outcomes of individuals living near coal-fired power plants. New research explores the health and environmental costs of coal storage and transportation, finding that increases in the level of coal stockpiles held by US power plants increase local air pollution levels, which in turn increases the average infant and adult mortality rates in the communities near these plants.

A study by social psychologists shows that people can reliably tell if someone is richer or poorer than average just by looking at a neutral face without any expression. This is due to visibility of the positions of muscles that become etched in the face over time as a result of repeated life experiences.

Older Americans are cheating on their spouses more than their younger counterparts, with 20 percent of married Americans over age 55 reporting they've engaged in extramarital sex. Just 14 percent of those under age 55 say they've cheated.