Aruã Macedo

All works

Ecological hard science fiction

Feroxygen

The Earth We Saved Too Much

Eighteen thousand years after humanity locked Earth's atmosphere at 25.8% oxygen to stop runaway warming, a forensic ignition cartographer in a high-altitude citadel discovers oxygen levels are secretly rising again — enough to incinerate what's left of the biosphere.

Standalone novel in five parts

The story

In a future shaped by an intervention meant to stop runaway warming, oxygen begins to rise again and makes ordinary fire a planetary danger. Lia Orta, a forensic ignition cartographer in a high-altitude citadel, investigates an "impossible fire" as Nilo Aram works to keep his lowland community alive through dangerous peat-fire seasons. A parallel timeline follows the people who built the intervention and the choices that made it difficult to reverse. The project combines an ecological science-fiction premise with an investigation; its chapter drafts are still being assessed as the novel develops.

A hard-ecological-SF forensic investigation — an inverted climate catastrophe (too much oxygen, not too little) with the visual ambition of Scavengers Reign and the systems rigor of The Expanse.

Why it stands out

The premise reverses a familiar climate-fiction expectation — too much oxygen rather than too little — and gives the investigation a concrete environmental threat. A forensic cartographer reading heat and pressure gradients can make the worldbuilding serve the mystery rather than become an infodump. The dual timeline lets the novel examine how a well-intended intervention can outlast the institutions meant to govern it. Scientific assumptions remain under review; this profile describes the intended premise, not independently validated science.

The world

The project is set roughly 18,400 years after a human climate intervention and uses a working specification involving elevated atmospheric oxygen, high-altitude cities and peat-fire lowlands. The precise physical model, terminology and title/brand identity remain in development review. This is a fictional world specification, not a claim that the scientific model has been independently validated.

Characters

  • Lia OrtaProtagonist (present day)A 34-year-old forensic ignition cartographer from the City of Air, investigating an "impossible" fire inside her own city; believes what can't be measured can't be trusted, and carries a hidden secret — an altered risk report from years earlier that may have let the current sabotage go unnoticed.
  • Nilo AramCo-lead (present day)A 36-year-old route-keeper and seasonal firefighter from the peat lowlands, breeder and slaughterer of the region's large detritivores; wants to lead his community through the next fire window without ceding territory to the cities.
  • Inês AvelarPOV, first era (18,400 years earlier)The 44-year-old systems architect who built the atmospheric intervention to be impossible for short-term governments to dismantle — and whose internal lie, that correct infrastructure can compensate for unstable institutions, drives the story's deepest irony.
  • Tomé SerranoPOV, first era (18,400 years earlier)A 46-year-old fire-dynamics and atmospheric-risk specialist who wanted to suspend the intervention's expansion until the redox balance was understood — and learns that being right about a risk doesn't make the politics simple.

Scope and formats

Standalone novel planned in 5 parts and 40 chapters, with a target of 110,000–130,000 words. A 40-chapter outline and chapter drafts exist; their sequence and relationship to the evolving manuscript are still being reviewed.

Could become
Books, Film & TV, Animation, Games
Who it is for
Proposed audience: readers of speculative climate fiction and ecological thrillers interested in science-led worldbuilding and investigation. This is editorial positioning, not measured audience or market research.
Adaptation ideas
The ecological setting and investigation could support screen or interactive exploration, but no validated adaptation package or game-mechanics design is documented. This is a development possibility, not a market-readiness claim; the priority is to reconcile the title, scientific model and manuscript authority.
Stage
10 chapters counted; 2 further drafts under review (40 planned)
Development materials
Development materials include world, character and science documents, a 40-chapter outline, and pitch material. Twelve chapter drafts are currently catalogued; the novel remains in development and is not open for submission. This page does not provide downloadable files.

For publishers and producers

Each work has a development dossier. Ask for the one that interests you and it comes with a first conversation.

  • One-page pitchLogline, tone, audience and why the story stands out.
  • SynopsisThe full arc of the book or the series.
  • World and charactersSetting, main cast and the conflicts that drive them.
  • Series planHow the story grows across books and formats.

This is an IP development portfolio for publishers, producers and partners. Ask for a work's dossier and current stage to explore a partnership.