Professor Kris Karnauskas researches atmospheric science and physical oceanography at the University of Colorado Boulder.

In this episode, we talk about the Galapagos Islands, which were made famous by Charles Darwin’s expedition on the HMS Beagle in 1835, aiding the development of the theory of evolution by natural selection.

We discuss why the serendipitous location of the Galapagos Islands, in relation to ocean currents, has led to its incredibly diverse wildlife. Not only this, but this small archipelago is crucial in dictating the global climate.

Link to Kris’s book

https://www.amazon.com/Physical-Oceanography-Climate-Kris-Karnauskas/dp/1108423868

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Professor Olsen is a paleontologist and stratigrapher at Columbia University.

In this episode, we cover the Triassic period. From the dawn of the dinosaurs to a mass extinction event, we cover what the climate was like, what dinosaurs were roaming the lands, and how 75% of all life forms were wiped off the face of the planet 200 million years ago.

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In this episode, I chat with Dr Jacob Anderson who is a postdoctoral researcher at the Lamont Doherty Observatory, Columbia University.

Jacob's research focuses on the ice of Antarctica and Greenland. We discuss how permafrost, permanently frozen ground, can be used to inform us about past climates, including ice sheet retreat and the harmful release of frozen carbon back into the atmosphere. We also cover the preservation of DNA in these environments, which may be up to two million years old.

We also discuss the possibility of harmful bacteria being re-released into the atmosphere as the ice melts, possibly leading to an apocalyptic global virus.

#ice #icesheets #antarctica #greenland #earth #earthscience #globalwarming #climatechange #podcast #geology #newzealand #columbiauniversity #rocks #permafrost #DNA #microbes #bacteria #glaciers #carbon #carboncycle

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This episode covers the geology of Stonehenge. It has long been believed that the rocks of Stonehenge originated from both Marlborough, 25 km from the site, and Mynydd Preseli in Wales.

However, a recent discovery by Anthony Clarke of Curtin University, has identified that the Altar stone, Stonehenge's centerpiece, may have come from rocks 750 km away in Scotland. We discuss this brand new research and how the rocks were transported such vast distances at least 1500 BC.

We also discuss the construction and transportation of similar rocky wonders from Easter Island, the Moai. Such research is vital for showing the organisational skills and ingenuity of societies thousands of years ago.

Thanks to @eseimperial

#rock #geology #podcast #curtinuniveristy #moai #stonehenge #geologicalsociety #altarstone #history #earth #unitedkingdom #wales #igneous #sedimentary #zircon #radiometric #radiometricdating #science #easterisland

In this episode, we discuss the Moon.

A recent paper has provided evidence for the theory of a magma ocean during the Moon's formation. We discuss this, how the Moon's surface is comprised of the highlands and lunar maria, and why we only see the near side.

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The fourth planet from the sun, Mars is the closest approximation to Earth that we have.

In this episode, we discuss how liquid water has been discovered on Mars for the first time by the NASA InSight Lander. We also cover the geology of Mars, including its internal core, mantle and crust.

We highlight that similar evidence for water has also been identified on the dwarf planet Ceres using the NASA Dawn spacecraft.

For this week's "What in the world?" we use Roman mythology to uncover the origins of the word volcano and a love affair between Mars and Venus.

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In this episode we cover the oldest rocks on Earth, stretching to our planet's formation 4.54 billion years ago.

We explain where the rocks are found and how we date them using radioactive elements, including the geology of Greenland, Canada and Australia.

We also discuss a mythical rock that was used to summon troops by King Alfred the Great during the Battle of Ashdown in Britain in 871 CE.

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In this episode, we discuss gold, including how it and massive gold deposits are formed and its journey through human history.

We also ask if alchemy is possible, including some examples of failed (and possibly successful) attempts, and finish by suggesting that Olympic gold medalists may not want to put that medal in their mouths.

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