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ScienceQuiet 8d · day 10

Scientists discover heat-loving amoeba that shatters eukaryotic temperature record

Incendiamoeba cascadensis reproduces at 63°C, breaking the theoretical limit for complex cellular life and revealing how organisms adapt to extreme environments.

newest coverage 8d agosummary written 8d ago7 pieces NewswiresGoogle NewsRedditMastodon

What to know

  • A newly discovered amoeba, Incendiamoeba cascadensis, reproduces at 63°C (145°F), breaking the theoretical 62°C limit for eukaryotic life previously inferred from fungal studies.
  • The organism's heat tolerance relies on multiple evolutionary adaptations, particularly an unusually large reserve of heat shock proteins, not a single genetic change.
  • Found in geothermal springs at Lassen Volcanic National Park, the discovery may expand understanding of where complex life can exist and suggests similar organisms could inhabit other extreme geothermal environments.
  • The finding highlights gaps in current biology: researchers still do not fully understand which eukaryotic cellular structures limit heat tolerance compared to hardier bacteria.

“Like other eukaryotes, Incendiamoeba has organelles, an active cytoskeleton and a relatively large genome, so what allows it to persist where others cannot?”

Kristen Skruber, Assistant Professor of Biology, Gonzaga University · The Conversation ↗ · Oct 28

Kristen Skruber Lead researcher, Assistant Professor of Biology

Scientists discover heat-loving amoeba that shatters eukaryotic temperature record
theconversation.com

How it unfolded 2 developments, newest first · click a bar or a number to jump articlesposts

Peak 2 pieces in 3h at Oct 29, 8 AM; 7 pieces over 10 days (5 articles · 2 posts) Oct 29, 8 AM — 2 pieces · 2 articles — Google News 1, Newswires 1Oct 29, 11 AM — 1 piece · 1 post — Reddit 1Oct 29, 2 PM — 1 piece · 1 article — Google News 1Oct 29, 5 PM — quietOct 29, 8 PM — quietOct 29, 11 PM — quietOct 30, 2 AM — quietOct 30, 5 AM — quietOct 30, 8 AM — quietOct 30, 11 AM — 1 piece · 1 post — Mastodon 1Oct 30, 2 PM — quietOct 30, 5 PM — quietOct 30, 8 PM — 2 pieces · 2 articles — Google News 2Oct 30, 11 PM — quietOct 31, 2 AM — quietOct 31, 5 AM — quietOct 31, 8 AM — quietOct 31, 11 AM — quietOct 31, 2 PM — quietOct 31, 5 PM — quietOct 31, 8 PM — quietOct 31, 11 PM — quietNov 1, 1 AM — quietNov 1, 4 AM — quietNov 1, 7 AM — quietNov 1, 10 AM — quietNov 1, 1 PM — quietNov 1, 4 PM — quietNov 1, 7 PM — quietNov 1, 10 PM — quietNov 2, 1 AM — quietNov 2, 4 AM — quietNov 2, 7 AM — quietNov 2, 10 AM — quietNov 2, 1 PM — quietNov 2, 4 PM — quietNov 2, 7 PM — quietNov 2, 10 PM — quietNov 3, 1 AM — quietNov 3, 4 AM — quietNov 3, 7 AM — quietNov 3, 10 AM — quietNov 3, 1 PM — quietNov 3, 4 PM — quietNov 3, 7 PM — quietNov 3, 10 PM — quietNov 4, 1 AM — quietNov 4, 4 AM — quietNov 4, 7 AM — quietNov 4, 10 AM — quietNov 4, 1 PM — quietNov 4, 4 PM — quietNov 4, 7 PM — quietNov 4, 10 PM — quietNov 5, 1 AM — quietNov 5, 4 AM — quietNov 5, 7 AM — quietNov 5, 10 AM — quietNov 5, 1 PM — quietNov 5, 4 PM — quietNov 5, 7 PM — quietNov 5, 10 PM — quietNov 6, 1 AM — quietNov 6, 4 AM — quietNov 6, 7 AM — quietNov 6, 10 AM — quietNov 6, 1 PM — quietNov 6, 4 PM — quietNov 6, 7 PM — quietNov 6, 10 PM — quietYesterday, 1 AM — quietYesterday, 4 AM — quietYesterday, 7 AM — quietYesterday, 10 AM — quietYesterday, 1 PM — quietYesterday, 4 PM — quietYesterday, 7 PM — quietYesterday, 10 PM — quietToday, 1 AM — quietToday, 4 AM — quietToday, 7 AM — quiet 12
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  1. 2

    Scientific community shares research findings on social platforms

    The discovery gains traction on Mastodon, where science communicators highlight that the organism's heat resistance stems from multiple evolutionary changes—including heat shock proteins and unusual protein building blocks—rather than a single genetic mechanism.

    • tksst@fediscience.org

      🦠 NEW: Researchers isolated a single-celled # amoeba , Incendiamoeba cascadensis, from # geothermal springs in # Lassen Volcanic National Park. It reproduces at 63º C (145º F), the highest temperature recorded for any eukaryotic life. Its survival relies on many evolutionary changes, including heat shock # proteins and unusual protein building…

      tksst@fediscience.orgMastodon8d agoview on Mastodon ↗
  2. 1

    Skruber explains organism's heat tolerance mechanisms in peer article

    Kristen Skruber publishes a detailed analysis explaining that Incendiamoeba's survival relies on multiple molecular adaptations, including abundant heat shock proteins that detect and refold unfolding proteins at high temperatures. The organism was isolated from geothermal springs in Northern California and may exist in other geothermal areas worldwide.

    “Incendiamoeba cascadensis, which is able to reproduce at 145 F (63 C). This finding marks the highest temperature yet recorded for eukaryotic life.”
    — Kristen Skruber, Gonzaga University
  3. background

    Research team publishes discovery of heat-tolerant amoeba — A study published in September 2026 by Kristen Skruber's team at Gonzaga University identifies Incendiamoeba cascadensis, a unicellular eukaryote capable of reproducing at 145°F (63°C), exceeding the previously theorized maximum temperature for eukaryotic life.

Also covered reported alongside — the timeline has no entry for these yet

  1. 2 outlets We discovered an organism that lives at blistering temperatures – but what allows it to take the heat?

    first by The Conversation, 10d ago · also The Conversation US

and 2 smaller pieces