0:30
Andrew Ashton, PhD in Earth and Ocean Sciences 7
Duke's Nicholas School of the Environment
0:37
Andrew Ashton, PhD in Earth and Ocean Sciences 6
0:17
Andrew Ashton, PhD in Earth and Ocean Sciences 5
0:55
Andrew Ashton, PhD in Earth and Ocean Sciences 4
0:47
Andrew Ashton, PhD in Earth and Ocean Sciences 3
0:20
Andrew Ashton, PhD in Earth and Ocean Sciences 2
0:21
Andrew Ashton, PhD in Earth and Ocean Sciences 1