Don A. Haas (@drdonhaas) 's Twitter Profile
Don A. Haas

@drdonhaas

I help Earth systems science educators kick butt as Director Teacher Programs at PRI's Museum of the Earth and a past president of the NAGT.

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linkhttp://bit.ly/DonsGiveGab calendar_today14-03-2012 17:17:27

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Don A. Haas (@drdonhaas) 's Twitter Profile Photo
Don A. Haas
@drdonhaas

10 months ago

A worthwhile thread. I’m flying in December for the first time in over a year. I’m hoping it will be the last one for a long time.