U.S. Options in the Ukraine-Russia Crisis | Ann Druyan, Carl Sagan's Widow, Reflects on 'Cosmos' | Inside the Intersection of Faith and Rhythm in Islam

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Carl Sagan, host of the original "Cosmos," with a model of the Viking lander.
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What Options Does the U.S. Have in the Ukraine-Russia Crisis? | Examining President Obama's $3.9 Trillion Budget | A Positive Twist on the Polar Vortex | Low-Tech Workplace Productivity Tips | Ann Druyan, Wife of the Late Carl Sagan, Reflects on 'Cosmos,' Now and Then | 'Rebel Music': How Muslims Musicians Around the World Express their Faith in Song