Follow metwitter.comThe latest Tweets from Christi Collins (@christibcollins). I am an Educator, Instructional Designer and strong advocate for technology implementation. I am also a wife and a mother to three great kids. Wise, Virginia
Dynamic Earthwww.mnh.si.eduThe Dynamic Earth @ National Museum of Natural History
Student Challenge-How does Earth's distance from the sun allow it to be the only inhabited planet? In your investigation, are there other planets that could allow for human life based on their environment?