In about one out of every 800 people, two chromosomes fuse together to form an unusual bond. These are known as Robertsonian chromosomes. It's a mystery that has long stumped scientists.

A Marana High School math teacher was recently honored with an award for outstanding educators from Yale University.

Happiness is an electrifying and elusive state. Philosophers, theologians, psychologists, and even economists have long sought to define it. And since the 1990s, a whole branch of psychology—positive ...

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Yahoo Sports TVyahoosports.tv is here! Watch live shows and highlights 24/7. Yahoo Sports DailyJason Fitz & Caroline Fenton bring you the top sports news to start your day. Fantasy Football LiveGet ...

Look closely at this image, stripped of its caption, and join the moderated conversation about what you and other students see. By The Learning Network Kashmir Hill joins us for the month of September ...

MathJax is an open-source JavaScript display engine for LaTeX, MathML, and AsciiMath notation that works in all modern browsers, with built-in support for assistive technology like screen readers, ...