Have I found gold? Simple tests to find out!
In this episode, I talk about the three common minerals that fool people into thinking they have found gold - pyrite, chalcopyrite, and mica. I talk about the simple tests you can do to find out if w...
26 Maj 20235min
Hawaii - why I love taking people to visit the volcanoes
In this episode, I talk about the four reasons I just love to take people on tours around the volcanoes in Hawaii. It is about the accessibility of seeing the planet's largest and most active volcanoe...
19 Maj 20239min
The 5 Great Extinctions
In this episode, I talk about the five great extinction events - events in which more than 70% of species on Earth become extinct. When did these occur and what might have caused each event.Visit our...
12 Maj 20238min
Graptolites
In this episode, I talk about the extinct colonial animal we call graptolites. These are fascinating fossils as they not only show an evolutionary trend that goes from complex to simple, but their wo...
5 Maj 20236min
Elements needed for an EV battery
In this episode, I talk about the major elements needed for an EV battery (lithium, cobalt, nickel, manganese and graphite). How much is needed for just one EV battery? Where are these materials cur...
28 Apr 20238min
Volcanic Explosive Index
In this episode, I talk about the Volcanic Explosive Index (VEI) and how that logarithmic scale is used to rate eruptions. It is based on the amount of material ejected, the size of the eruption plum...
21 Apr 20238min
Volcanic Eruption Styles
In this episode, I talk about the five major eruption styles - Icelandic, Hawaiian, Strombolian, Vulcanian, and Plinian. What are the characteristics of these different styles of eruptions and what m...
14 Apr 20239min
Sapphires, Rubies & Corundum (oh my!)
In this episode, I talk about the corundum family of minerals - their chemistry, how they form, and what makes them different from each other.Visit our GEOetc Members Section - Over 100 teaching resou...
7 Apr 20235min
