The fate of Nora, a supermarket cashier who lives happily with her boyfriend Aron, and that of Natan, a loving father who works as a night watchman, cross paths when misfortune turns their lives upside down.

Relativity follows a twenty-something couple and the lives and loves of their friends and siblings in Los Angeles.

Relativity follows a twenty-something couple and the lives and loves of their friends and siblings in Los Angeles.

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An acclaimed stage performer, Dorothy still struggled with the challenge of her color, in a time that wouldn't let some stars in by the front door. Yet against the odds she beat out many more famous rivals for the role of "Carmen Jones", becoming the first black woman ever nominated for a Best Actress Academy Award. Marriages and affairs would break her heart, but her heart was strong. Seductive and easily seduced, she was born to be a star - with all the glory and all the pain of being loved, abused, cheated, glorified, undermined and undefeated. Here was a woman who wouldn't wait in the wings. Halle Berry stars as Dorothy Dandrige.

Over 100 years ago, Albert Einstein grappled with the implications of his revolutionary special theory of relativity and came to a startling conclusion: mass and energy are one, related by the formula E = mc2. In "Einstein's Big Idea," NOVA dramatizes the remarkable story behind this equation. E = mc2 was just one of several extraordinary breakthroughs that Einstein made in 1905, including the completion of his special theory of relativity, his identification of proof that atoms exist, and his explanation of the nature of light, which would win him the Nobel Prize in Physics. Among Einstein's ideas, E = mc2 is by far the most famous. Yet how many people know what it really means? In a thought-provoking and engrossing docudrama, NOVA illuminates this deceptively simple formula by unraveling the story of how it came to be.