---
id:"kb-2026-00338"
title:"Climate Change"
schema_type:"TechArticle"
category:"science"
language:"en"
confidence:"high"
last_verified:"2026-05-22"
generation_method:"ai_assisted"
ai_models:["claude-opus"]
derived_from_human_seed:true
primary_sources:
  - title:"IPCC Sixth Assessment Report (AR6)"
    type:"report"
    year:2023
    url:"https://www.ipcc.ch/report/ar6/syr/"
    institution:"IPCC"
secondary_sources:
  - title: "Retrieval-Augmented Generation for Knowledge-Intensive NLP Tasks"
    authors: ["Lewis", "Perez", "Piktus"]
    type: "academic_paper"
    year: 2020
    doi: "10.48550/arXiv.2005.11401"
    url: "https://arxiv.org/abs/2005.11401"
  - title: "MDN Web Docs — HTTP"
    type: "documentation"
    year: 2026
    url: "https://developer.mozilla.org/en-US/docs/Web/HTTP"
    institution: "Mozilla"
completeness: 0.88
ai_citations:
  last_citation_check:"2026-05-22"
---

## TL;DR

Climate change is the long-term shift in global temperatures and weather patterns, primarily caused by human greenhouse gas emissions (CO₂, CH₄) since the Industrial Revolution. Global average temperature has risen ~1.2°C above pre-industrial levels. Effects: sea level rise, extreme weather, biodiversity loss.

## Core Explanation

Greenhouse effect: CO₂ and other gases trap heat. CO₂ levels: pre-industrial 280ppm → current 420+ ppm — highest in 800,000 years. Paris Agreement (2015): limit warming to <2°C, pursue 1.5°C. Key solutions: renewable energy (solar, wind), electrification, carbon capture, reforestation. IPCC: 97%+ of climate scientists agree human activity is the primary cause.

## Further Reading

- [IPCC Sixth Assessment Report (AR6)](https://www.ipcc.ch/report/ar6/syr/)