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[http://www.nasa.gov/centers/ames/events/2009/04_21.html ==B Expo:== Exploration and Sustainability Exposition at Moffett Field]
NASA Ames and the NASA Research Park host the 2009 Exploration and Sustainability Expo. 9 a.m. to 4 p.m. in NASA Ames’ Building 943.

[http://www.arts4all.org/attend/calendar.htm?cat=all ==B Concert:== Choral music by Cut Circle at CSMA]
This vocal octet will perform Renaissance music at CSMA’s Tateuchi Hall. Free. The concert begins at 6 p.m.

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