GEO GIRL Courses

How We Know What Happened in Earth's Past - Like Ancient Climate, Geology, and Extinctions

Explore Earth's ancient past through proxies: physical, chemical, and biological signatures in rocks. Uncover climate trends, geological events, and biological evolution using innovative scientific techniques.

• YouTube
• 51 minutes
• On-Demand
• Free Video

Why Microbes Are Necessary for All Life on Earth - Geo Girl

Explore the crucial role of microbes in Earth's biogeochemical cycles, driving element transformation and sustaining life. Learn about microbial metabolisms and their impact on carbon, nitrogen, sulfur, phosphorus, and metal cycles.

• YouTube
• 27 minutes
• On-Demand
• Free Video

More Times Plate Tectonics Caused Major Climate Events - GEO GIRL

Explore 5 major climate events caused by plate tectonics, including the formation and closure of ocean basins, continental collisions, and the onset of the modern Ice Age.

• YouTube
• 29 minutes
• On-Demand
• Free Video

How and Why Earth Went From Purple to Green - Twice

Explore Earth's colorful past, from purple to green, as ancient microbes shaped our planet's appearance. Discover the fascinating evolution of photosynthesis and its impact on Earth's visual history.

• YouTube
• 21 minutes
• On-Demand
• Free Video

The Major Causes of Mass Extinction Events in Earth History

Explore the top causes of mass extinctions: global warming, CO2 increase, and ocean anoxia. Learn how these factors trigger catastrophic events and their devastating effects on Earth's biodiversity.

• YouTube
• 25 minutes
• On-Demand
• Free Video

All the Types of Sand and Why There's So Many Colors - Geo Girl

Explore the diverse world of sand, from quartz to olivine, and learn about its various compositions, colors, and origins in beaches and deserts. Discover sand's uses for humans and wildlife.

• YouTube
• 24 minutes
• On-Demand
• Free Video

The "Boring Billion"- What Really Happened 1.8 to 0.8 Billion Years Ago?

Explore Earth's "Boring Billion" era: geological events, ocean chemistry, and life evolution during 1.8-0.8 billion years ago. Uncover the truth behind this intriguing period's nickname and its impact on Earth's history.

• YouTube
• 28 minutes
• On-Demand
• Free Video

Everything You Could Ever Want to Know About Ice - GEO GIRL

Explore the fascinating world of ice, from its unique properties to its various forms. Discover how ice impacts Earth and potentially alien life, and learn about atmospheric ice formations like snowflakes and hail.

• YouTube
• 25 minutes
• On-Demand
• Free Video

The Controversial Role of Oxygen in Animal Evolution and Diversification

Explores the complex factors behind animal evolution, challenging the oxygen control hypothesis and discussing alternative triggers like temperature, nutrients, and ecological interactions.

• YouTube
• 22 minutes
• On-Demand
• Free Video

How Earth’s Crust Formed and Difference Between Tectonic Plates and Crust - GEO GIRL

Explore Earth's crust formation, tectonic plates, and their impact on supercontinents. Learn about oceanic and continental crust differences, Earth's layers, and how these processes shape our planet's geology and climate.

• YouTube
• 20 minutes
• On-Demand
• Free Video

Difference Between Stable and Radioactive Isotopes and Their Applications

Explore stable and radioactive isotopes, their differences, and applications in geology and climate science. Learn about radiometric dating, isotope fractionation, and their role in understanding Earth's history and climate change.

• YouTube
• 28 minutes
• On-Demand
• Free Video

Types of Clays - Composition, Structure, and Bonding of Clay Minerals

Comprehensive exploration of clay types, formation, structure, and classification, covering phyllosilicate and oxide clays, their mineral composition, and geological significance, including extraterrestrial occurrences.

• YouTube
• 26 minutes
• On-Demand
• Free Video

What Is Carbon Sequestration, Why Is It Important, and How Does It Work? - GEO GIRL

Explore carbon sequestration's importance in mitigating climate change, focusing on soil health, regenerative farming, and long-term storage methods like mineral weathering. Learn how to contribute to carbon reduction efforts.

• YouTube
• 20 minutes
• On-Demand
• Free Video

Earth’s Age - How We Know Earth is 4.55 Billion Years Old

Comprehensive exploration of Earth's age determination, covering relative and absolute dating methods, historical estimates, radiometric dating, and evidence supporting the 4.55 billion-year age of our planet.

• YouTube
• 26 minutes
• On-Demand
• Free Video

Paterae- Io’s Most Common Volcanic Feature- Surprisingly Different Than Earth Volcanism - GEO GIRL

Explore Io's unique volcanic features, paterae, and their formation, distribution, and composition. Learn about the differences between Io's volcanism and Earth's, and current hypotheses on lava lakes.

• YouTube
• 23 minutes
• On-Demand
• Free Video