---
id: environmental-science
title: "Environmental Science: Ecosystems and Global Change"
schema_type: Article
category: science
language: en
confidence: high
last_verified: "2026-05-28"
created_date: "2026-05-24"
generation_method: ai_structured
ai_models:
  - claude-opus
derived_from_human_seed: true
conflict_of_interest: none_declared
is_live_document: false
data_period: static
atomic_facts:
  - id: fact-sci-env-001
    statement: "IPCC AR6 reports that atmospheric carbon dioxide reached about 410 ppm in 2019 and was higher than at any time in at least the past two million years."
    source_title: IPCC AR6 Working Group I Technical Summary
    source_url: https://www.ipcc.ch/report/ar6/wg1/chapter/technical-summary/
    confidence: high
  - id: fact-sci-env-002
    statement: "Richardson et al. 2023 quantified all nine planetary boundaries and found that six had been transgressed."
    source_title: Earth beyond six of nine planetary boundaries
    source_url: https://doi.org/10.1126/sciadv.adh2458
    confidence: high
  - id: fact-sci-env-003
    statement: "The IPBES Global Assessment reported that around one million animal and plant species are threatened with extinction, many within decades."
    source_title: Global Assessment Report on Biodiversity and Ecosystem Services
    source_url: https://doi.org/10.5281/zenodo.3831673
    confidence: high
completeness: 0.85
known_gaps:
  - Carbon capture and storage technologies
  - Climate adaptation strategies by region
disputed_statements: []
primary_sources:
  - title: IPCC AR6 Working Group I Technical Summary
    type: government_report
    year: 2021
    url: https://www.ipcc.ch/report/ar6/wg1/chapter/technical-summary/
    institution: IPCC
  - title: Earth beyond six of nine planetary boundaries
    type: academic_paper
    year: 2023
    url: https://doi.org/10.1126/sciadv.adh2458
    doi: 10.1126/sciadv.adh2458
    institution: Science Advances
  - title: Global Assessment Report on Biodiversity and Ecosystem Services
    type: government_report
    year: 2019
    url: https://doi.org/10.5281/zenodo.3831673
    doi: 10.5281/zenodo.3831673
    institution: IPBES
secondary_sources: []
updated: "2026-05-28"
---

## TL;DR

Environmental science studies climate, ecosystems, biodiversity, land, water, and human impacts as connected Earth systems.

## Core Explanation

This repaired entry keeps three directly sourced claims: atmospheric carbon dioxide in IPCC AR6, planetary boundaries in Richardson et al. 2023, and biodiversity extinction risk in the IPBES Global Assessment.

## Detailed Analysis

The article no longer relies on broad textbook entries or fabricated future update sources. Additional claims about renewable deployment, sea-level rise, ocean acidification, and carbon capture should be restored only when they are tied to precise sources.

## Further Reading

- [IPCC AR6 Working Group I Technical Summary](https://www.ipcc.ch/report/ar6/wg1/chapter/technical-summary/)
- [Earth beyond six of nine planetary boundaries](https://doi.org/10.1126/sciadv.adh2458)
- [IPBES Global Assessment](https://doi.org/10.5281/zenodo.3831673)

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