Big Natural Simulations

We have so much to learn from our planet.

Our mission is to promote conservation, responsible carbon-emission, and the wonder of the outdoors through optimization, simulation, modeling, and visualization.

420 ppm ↗ atmospheric CO₂ in this valley, 2026

A toy carbon budget. Drag the sliders until the valley stops warming.

One engine, three uses

Everything we make starts as a model of a real system: a watershed, a forest, a supply chain. The model becomes a lesson, a game, or an audit depending on who needs it.

Media & education

Interactive explainers and mini games for classrooms, museums and anyone who wants to understand how a system behaves rather than memorize what it is.

Simulation & modeling

Optimization, agent-based and systems models for land managers, researchers and companies who need to test a decision before they make it.

Carbon consulting

Footprint measurement and reporting built on transparent, reproducible models, so the number on the page can be traced back to the thing that produced it.

The lab

Open experiments. Each one is a small, honest model with the assumptions written down. Play with them, break them, tell us what's wrong.

  • Valley carbon budget

    Factories, forests and the air between them. The simulation at the top of this page.

    Playable above
  • Atlantic storm tracks

    Every recorded Atlantic tropical cyclone since 1851 on a globe you can spin, colored by peak intensity.

    Live
  • Watershed

    Rain falls on a hillside; land use decides whether it reaches the river clean, muddy, or not at all.

    In progress
  • Predator & prey

    Lynx and hare on a shared range. Adjust hunting pressure and habitat and watch the cycle shift.

    In progress
  • Supply chain footprint

    Trace one product from raw material to doorstep and see where the emissions really hide.

    Planned

A carbon number you can argue with

Most footprint reports are a PDF and a promise. Ours ship with the model: every emission factor, every boundary decision, every assumption, in a form the reader can inspect and rerun.

  • Scope 1, 2 and 3 accounting aligned to the GHG Protocol
  • Reproducible models delivered alongside the report
  • Plain-language summaries for customers, not just regulators
Talk to us about an audit

Have a system you'd like to see run?

Schools, newsrooms, land trusts, and companies that want their footprint measured properly: write to us.

hello@bignaturalsimulations.com Browse the lab