Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Pete Rathburn is a copy editor and ...

Severe storms — thunderstorms that produce tornadoes, hail at least one inch in diameter, or damaging winds (58 mph or higher) — are destructive and deadly. They cause an average of 200 deaths ...

The spectrum of a graph is the spectrum of its adjacency matrix, Cospectral graphs are graphs having the same spectrum. In this paper we study the phenomenon of cospectrality in graphs by comparing ...

The autumn season is a fan favorite for so many with a return to pleasantly cool air punctuated by crisp nights and mild ...

James Chen, CMT is an expert trader, investment adviser, and global market strategist. Gordon Scott has been an active investor and technical analyst or 20+ years. He is a Chartered Market Technician ...

The coordinates of the turning point and the equation of the line of symmetry can be found by writing the quadratic expression in completed square form. Find the equation of the line of symmetry and ...

US President Donald Trump appeared to struggle walking in a straight line as he approached Russian President Vladimir Putin for a highly anticipated meeting in Anchorage on Friday. The moment, ...

As one of the most prolific and beloved songwriters in music history, Jimmy Webb is responsible for such classic hits as "Wichita Lineman," "Up, Up and Away" and "By the Time I Get to Phoenix" — but ...

President Donald Trump’s equilibrium appeared off as he walked the red carpet to greet Russian President Vladimir Putin on Friday, August 15. The 79-year-old zigzagged from right to left as he ...

From behind the wheel of 10 of the ultimate performance cars of 2009, we picked our first America's Best Driver's Car.

The African Union has joined a growing campaign to challenge centuries of cartographic distortion that has long diminished Africa’s true scale on world maps. The bloc of 55 nations recently endorsed ...