The proof, known to be so hard that a mathematician once offered 10 martinis to whoever could figure it out, connects quantum ...

Learn how total return swaps work, their benefits, and risks, with easy examples that illustrate the payments and returns based on underlying asset performance.

It might not be as mustache-twirling a villain as Alden Global Capital, but its enormous scale has meant enormous losses for local journalism.

Discover what brand awareness is, why it matters, and how to effectively build it using proven strategies to ensure your brand stands out in a competitive market.

Get the latest lifestyle news with articles and videos on pets, parenting, fashion, beauty, food, travel, relationships and more on ABCNews.com ...