Two Libertarian candidates for statewide office in Ohio have been tossed from the May primary ballot by the state elections chief.
Calendar in Ice
The ways tree rings and glaciers reveal past events and record time.
In this lesson students will learn how an ice core provides a record of past climates. Students will create a timeline of their life experiences, analyze model glacier data, and create an ice core diagram of the Dust Bowl years.
Download teacher’s guide (PDF, 116K)