Extreme Heat conference cancelled due to extreme heat warning

Original Article ↗ Hacker News Discussion ↗

Event cancellation & irony

  • Many find it ironic or humorous that an “Extreme Heat” conference was cancelled due to an extreme heat warning, with jokes about “fireside chats” and self‑reference.
  • Some initially suspected virtue signaling, but others note the venue (old LSE library, no AC, stuffy halls) is genuinely unsuitable and potentially unsafe for a crowded event in high heat.

How hot is “extreme”?

  • Debate over 37–40°C: routine and survivable in Australia, US South, etc., versus truly extreme in the UK and much of Europe.
  • Multiple comments stress humidity, wet‑bulb temperature, and dew point as key; London and much of Europe are humid, making the same air temperature far more dangerous.
  • Acclimatization matters: people used to hot, dry or tropical climates tolerate higher temps than those from cooler, damp regions.

Buildings, AC, and cost

  • European buildings often designed to retain heat (thick masonry, insulation, small or non‑sliding windows), which helps in winter but traps summer heat.
  • Retrofitting AC is hindered by:
    • Historic‑building rules and façade aesthetics.
    • Landlord/HOA restrictions, multi‑owner approvals.
    • Window styles that don’t fit cheap US‑style window units.
    • High upfront and installation costs relative to local incomes and high electricity prices.
  • Portable ACs and improvised solutions (dual‑hose units, window seals) are common but noisy, inefficient, and often sold out in heatwaves.
  • Some argue governments should subsidize AC/heat pumps as life‑saving infrastructure; others emphasize better insulation, shading, and passive cooling first.

Health impacts & statistics

  • Strong claims that Europe’s low AC penetration leads to far more heat‑related deaths per capita than hot US states; others counter:
    • Europe often uses excess‑mortality models, while US stats rely on explicit “heat” on death certificates.
    • Europe has more very old people; many heat deaths are 80+ and might have died of other causes soon.
    • Cold‑related deaths in Europe are still much more common than heat deaths.
  • Overall agreement that elderly and vulnerable populations are at greatest risk.

Climate change & responsibility

  • Dispute over whether 40°C in Europe is “normal Mediterranean heat” or a sign of unprecedented warming (records repeatedly broken, earlier in the season).
  • Some see widespread AC as necessary adaptation and potentially climate‑friendly if implemented as electric heat pumps powered by renewables.
  • Others worry that relying on AC masks the urgency of emissions cuts and adds load to already stressed grids, though there’s disagreement on how climatically significant AC waste heat is.

Adaptation strategies

  • Suggested mix: bedroom‑level AC for survival, plus urban trees, shading, eaves, night ventilation, and better design in new construction.
  • Frustration from some Europeans that current planning rules and cultural attitudes still produce “brick ovens” without adequate cooling despite clear warming trends.