OnTopic: Mission Trails Regional Park Forms in Four Phases
19:34
Rise and Fall of the Mountains at Mission Trails Regional Park
59:13
Mother Nature in San Diego: Earthquakes
22:23
Intraplate ocean island volcanism - a short visit to Canaries
49:24
OnTopic: Getting the Most of iNaturalist
57:42
California in 10 Million Years - Perspectives on Ocean Science
1:30:22
NATtalk: An Evening with the Cerutti Mastodon Scientists
1:18:14
Living Room Lecture - Amelia Earhart Archaeology: Testing the Nikumaroro Hypothesis
52:44