Science is messy business. Finding the truth is easier said than done.

For decades, scientists have relied on tree rings to estimate how long trees can live. But new research suggests that this widely used method may have been underestimating the lifespan of many ...

Learn about the Christmas tree options strategy, involving six call or put options with various strikes designed for traders expecting a neutral to bullish market trend.

In recent years, the growing demand for urban commuting has driven the rapid development of subway systems, which have been evolving toward higher density ...

Russell McLendon is a science writer with expertise in the natural environment, humans, and wildlife. He holds degrees in journalism and environmental anthropology. The red deer of Eurasia live in ...

Elizabeth Blessing is a financial writer and editor specializing in growth investing, high-yield stocks, small caps, and gold investing. Thomas J. Brock is a CFA and CPA with more than 20 years of ...