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Yahoo CEO Marissa Mayer takes on the ALS Ice Bucket Challenge

2h ago
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Yahoo CEO Marissa Mayer and hundreds of Yahoo employees took on the ALS Ice Bucket Challenge at Yahoo's Sunnyvale, CA campus. Marissa challenged three amazing entrepreneurs: Jack Dorsey of Twitter and Square; Travis Kalanick of Uber; and, David Karp of Tumblr. http://www.alsa.org/donate