Why is it Effective?

01.

Climate impacts drive the storyline
A record-breaking heat dome pushes the hospital to its limits. Air conditioning fails, ice runs out and overheated wards fill with patients suffering heatstroke, bringing the real-world dangers of extreme heat directly into the drama.

02.

Grounded in real medical practice
Doctors treat patients using real cooling techniques, including ice baths, helping audiences understand how extreme heat affects the human body and healthcare systems.

03.

Character-led storytelling keeps audiences engaged
Personal storylines – including an emergency ice run that escalates into a hostage situation – maintain tension while showing how extreme conditions increase pressure on communities and emergency services.

The Impact

01.

3.9 Billion Minutes
The show generated 3.9 billion viewing minutes in April 2025 across Hulu and Netflix, making it the most streamed title in the US that month.

02.

1,311 Deaths
Heat-associated deaths recorded in England during summer 2024 highlight the growing real-world risk of extreme heat.

03.

Audience Understanding
Viewers reported learning more about how extreme heat harms human health and strains healthcare systems.

04.

Policy Awareness
Watching the episode increased support for heat-adaptation measures such as improved hospital infrastructure and public cooling centres.

Supporting Details

  • The storyline increased viewers’ belief that they could personally experience a heatwave. 
  • Audiences reported greater concern about the health risks of extreme heat and its wider societal impacts. 
  • Viewers said integrating climate issues into character-driven stories enhanced realism, relevance and entertainment value.