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📘 Keep a white plain from meaning bare rock

Imagine standing near the middle of Antarctica on a nearly featureless white plain. Write what that ice is doing - before you let the view start meaning bare, empty rock under your boots.

3
lessons
~15 min
to learn
Adults
level
Start the course →

What you’ll learn

  1. Ice hides a continentBedmap3 landscape; plain ≠ bare rock.Imagine the plateau before you let a white plain mean bare rock.
  2. Water and signals under pressureBasal water and geophysical methods.Ask how liquid water can exist under kilometres of ice.
  3. Keep the bare rock honestUncertainty and risk; notice plain-as-bare.Tonight, notice one Antarctica headline that tried to mean bare rock.

Questions this course answers

What does Bedmap3 mainly provide?

It synthesizes decades of surveys; gaps and models remain between measurements.

Put a responsible subglacial claim in order.

Maps improve by adding data while keeping error visible.

Why can liquid water persist beneath Antarctic ice in some places?

Basal water is local and conditional, not a single underground sea.

Grounded in trusted sources

  • Pritchard et al. Bedmap3 updated ice bed, surface and thickness gridded datasets for Antarctica. Scientific Data (2025). https://www.nature.com/articles/s41597-025-04672-y
  • British Antarctic Survey. New map of landscape beneath Antarctica unveiled. https://www.bas.ac.uk/media-post/new-map-of-landscape-beneath-antarctica-unveiled/
  • Nature. The Gamburtsev mountains and the origin and early evolution of the Antarctic Ice Sheet. https://www.nature.com/articles/nature08024
  • Nature Reviews Earth and Environment. Subglacial lakes and their changing role in a warming climate. https://www.nature.com/articles/s43017-021-00246-9
  • Nature. A microbial ecosystem beneath the West Antarctic ice sheet. https://www.nature.com/articles/nature13667
  • National Snow and Ice Data Center. IceBridge. https://nsidc.org/data/icebridge
  • NASA Earth Observatory. Something Under the Ice is Moving. https://science.nasa.gov/earth/earth-observatory/something-under-the-ice-is-moving/

Every Wunder lesson is built from real, reputable sources — never invented.

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