Minnesota Vikings head coach Kevin O'Connell looks around as he talks with tight end T.J. Hockenson (87) and quarterback J.J. McCarthy (9) during warmups before the start of the game against the ...

A strand of hair cuts across a laser beam, creating interference fringes on the wall of a science museum in New York City. High-school students use the spacing between bands to calculate the hair’s ...

Sean Ross is a strategic adviser at 1031x.com, Investopedia contributor, and the founder and manager of Free Lances Ltd. Robert Kelly is managing director of XTS Energy LLC, and has more than three ...

Alexandra Twin has 15+ years of experience as an editor and writer, covering financial news for public and private companies. David Kindness is a Certified Public Accountant (CPA) and an expert in the ...

Individual aseismic areas move as rigid plates on the surface of a sphere. Application of the Mercator projection to slip vectors shows that the paving stone theory of world tectonics is correct and ...

Understand the world with a daily explainer, plus the most compelling stories of the day.