March 13, 2018April 1, 2021 BJ Deming

Guest Videos: Finding Megaquakes Before They Happen

March 7, 2018April 1, 2021 BJ Deming

Guest Video: Peridot, A Mantle Gem

March 6, 2018June 7, 2020 BJ Deming

Guest Video: Fly Geyser

March 4, 2018April 1, 2021 BJ Deming

Guest Video: The Biggest Eruption of the 20th Century

March 3, 2018April 1, 2021 BJ Deming

Near-Earth Objects

March 3, 2018April 1, 2021 BJ Deming

Guest Video: Digging Up A Herkimer Diamond

February 27, 2018April 1, 2021 BJ Deming

Guest Video: A Sense of Wonder

February 25, 2018April 1, 2021 BJ Deming

Fuego and Acatenango

February 21, 2018June 7, 2020 BJ Deming

Guest Reblog: The Face of Mars Rover “Opportunity”

February 21, 2018April 1, 2021 BJ Deming

Guest Videos: Capetown – The First Modern City to Go Dry?