Warning! JavaScript must be enabled for proper operation of the site.

Retreating Ice

by John Cadman

78
skips
22
questions
Retreating Ice

Act One

  • John Cadman

    John Cadman

    October 31, 2014

    At what rate is the Columbia Glacier, Alaska, retreating?

  • Teacher note
    Start photo: July 28, 1986

    End photo: July 14, 2014

    http://earthobservatory.nasa.gov/IOTD/view.php?id=84630

Sequel

show 22 more questions

Comments

Join or sign in to leave a comment.