{"id": 671491906166259712, "lang": "en", "text": "STUDENTS: Want to learn about rare earth metals? There's a new class for that! https://t.co/wCzOj9sYC0 @CMI_hub @ISU_CoE @Ames_Laboratory", "urls": [{"url": "https://t.co/wCzOj9sYC0", "expanded_url": "http://1.usa.gov/1MQCy0m"}], "user": {"id": 166252256}, "id_str": "671491906166259712", "source": "<a href=\"http://measuredvoice.com/\" rel=\"nofollow\">Measured Voice</a>", "deleted": false, "hashtags": [], "retrieved": "2016-12-05--14-33-04", "created_at": "Tue Dec 01 00:52:00 +0000 2015", "retweet_count": 19, "user_mentions": [{"id": 2182426668, "name": "Critical Materials", "screen_name": "CMI_hub"}, {"id": 18053349, "name": "Iowa State ENGR", "screen_name": "ISU_CoE"}, {"id": 37015292, "name": "Ames Laboratory", "screen_name": "Ames_Laboratory"}], "favorite_count": 14, "legacy_imported": true}