Episode 118 – Trace Fossils

Listen to Episode 118 on PodBean, YouTube, iTunes, or maybe somewhere else!

As organisms live, grow, and move in their environments, they leave all sorts of evidence behind on their surroundings. When this evidence becomes preserved in the geologic record, it can be provide some of our best clues to understanding lifestyles and evolution of ancient life. This episode, we talk about Trace Fossils.

Continue reading

Episode 117 – Crabs and Carcinization

Listen to Episode 117 on PodBean, YouTube, iTunes, or wherever else you can find it!

Several thousand living species – and many more fossils – are called “crabs,” but they don’t all share an evolutionary history. The crab-like body plan is a repeated trend in crustacean evolution, and there are differing opinions on what exactly counts as a “crab” and why natural selection keeps making them. This episode, we talk Crabs and Carcinization.

Continue reading

Episode 115 – Biomes

Listen to Episode 115 on PodBean, YouTube, iTunes, or pick your favorite place for podcasts!

The Earth is covered in ecosystems, but what lives where is dependent on the local climate and landscape. This variation creates vast patterns in the distribution of life, patterns that scientists can use to understand ecology, and patterns that have changed over time as the Earth’s surface has transformed. This episode, we discuss the modern state and ancient history of Biomes.

Continue reading

Episode 114 – Polar Life

Listen to Episode 114 on PodBean, YouTube, iTunes, or pick your favorite place for podcasts!

Far to the north and far to the south, conditions on Earth get weird. Cold climates and periods of perpetual night or day create some of the most unique habitats on the planet, and yet life has thrived there throughout Earth history and continues to do so today. This episode, we discuss the diversity, history, and adaptations of Polar Life.

Continue reading

Episode 113 – Paleoclimate

Listen to Episode 113 on PodBean, YouTube, iTunes, or pick your favorite place for podcasts!

Life on Earth is directly impacted by the climate, and the climate changes over time in response to the activities of tectonic plates, ocean currents, biological communities, and of course, even humans. The geologic record of our planet is an archive of data on the causes and effects of changing climates. This episode, we discuss Paleoclimate.

Continue reading