- www.oar.noaa.gov/k12
- PERMAFROST What is permafrost How can something be preserved for 30, 000 years How can humans adapt to permafrost What can permafrost tell us about our past and future climate Peggy discovers treasures hidden for 30, 000 years when she visits a permafrost tunnel in Alaska. Contents Insights & Connections Vocabulary Resources Main Activity Try This INSIGHTS The permafrost tunnel 10 miles north ...www.ktca.org/newtons/11/prmfrost.html
- www.geo.unizh.ch/~kaeaeb/schafberg.html