『Bedrock: Earth's Earliest History』のカバーアート

Bedrock: Earth's Earliest History

Bedrock: Earth's Earliest History

著者： Dylan Wilmeth
無料で聴く

このコンテンツについて

 This podcast starts at the beginning of Earth's prehistory and works forward through time. Bedrock will explore the first 90% of Earth’s past, a time known as the Precambrian Era. Before humans, before dinosaurs… there was the Precambrian. The Earth was an incredibly alien world, but not a dead one. Along the way, you will build a mental toolkit to see the world like a geologist. You will never look at a mountain, the moon, or pond scum in quite the same way again. Welcome to Bedrock. For transcripts, visuals, and references, check out https://www.bedrockpodcast.comCopyright 2025 Dylan Wilmeth 地球科学 生物科学 科学
エピソード
  • 45: As Above, So Below

    45: As Above, So Below
    2025/09/10

    What was Earth's mantle like 3.8 billion years ago, and how do we know?

    The mantle is a realm that humans have never visited, and examining it is only harder in the ancient past. Fortunately, the mantle sometimes gifts us with beautiful green rocks from the deep, souvenirs of an unknown underworld. Today, we learn how the mantle has changed over time, and its surprising connections to outer space. On the way, we'll meet the father of geochemistry, revisit old asteroid friends, and learn why you should always flour your berries before making a cake.

    Extra Credit: Bake some blueberry muffins.

    Donate to support the show- anything is appreciated!
    続きを読む 一部表示
    28 分
  • 44: From the Abyss

    44: From the Abyss
    2025/08/27

    What is the world's oldest slice of mantle, and how did it reach the surface?

    Today, we'll meet the first tangible piece of the world below the crust, a world humans still have not visited. Along the way, we'll meet an old mineral friend from Season 1, a researcher named Friend, and learn how diamonds can be a geologist's best friend when looking for slices of the mantle.

    Extra Credit: Clean your bathtub, or call an old friend.

    Donate to support the show- anything is appreciated!
    続きを読む 一部表示
    25 分
  • 43: Postcards From the Edge

    43: Postcards From the Edge
    2025/08/13

    In 1971, two geologists traveled to the edge of Greenland's ice sheet. What they found were the oldest rocks known at the time, 3.8-3.7 billion years old.

    Shockingly, they were in decent condition, sparking a half-century of geology stories. Today we'll begin our tour of Isua, the final destination of Season 2. Along the way, we'll meet a Holocaust survivor who landed on top of the world, visit an iron mine surrounded by glaciers, and start to meet the highest-quality rocks of this season.

    Extra Credit: Eat some candy, some shrimp, or some Indian food.

    Donate to support the show- anything is appreciated!
    続きを読む 一部表示
    30 分
まだレビューはありません