The effects of smoking on physical health are well-documented, but new research is shedding light on the effects of smoking and tobacco use on mental health.

Synthetic nitrogen fertilizers have revolutionized worldwide food production, but after a century, environmentalists are sounding the alarm.

Today we feed a growing global population with the crops fed by synthetic nitrogen fertilizer, but are there side effects?

Farmers, gardeners and scientific scholars understand that nitrogen is one of the most important plant foods. But are artificial means the answer?

DDT had no practical use until Paul Hermann Müller, a chemist working in Basel, Switzerland, discovered that it was an effective contact insecticide.

In his semi-retirement from a long career focusing on outer space, scientist Robert Nathan is focusing on how humans can extend their life on earth.

Early in stem cell research, scientists believed that differentiated body cells could not be coaxed back to a stem-like state. This belief has been turned on its head, offering hope for more healthy aging.

Survey finds that teens who have seen their parents drunk are more than twice as likely to get drunk themselves in a typical month.

Researchers are investigating an array of biochemical fixatives that propose to increase longevity.

Part of the task of looking our best involves paying attention to what we eat. And learning about food and nutrition is the first step to healthy eating.