Lesson 10 min 20 XP
Climate Science Basics
The scientific foundation of climate diplomacy: what we know, how we know it, and why it matters for policy.
What the Science Says
The Intergovernmental Panel on Climate Change (IPCC), established in 1988, synthesizes climate research from thousands of scientists worldwide. Its findings are the scientific foundation of all climate diplomacy:
- The warming is real. Global average temperature has risen approximately 1.1 degrees Celsius above pre-industrial levels (1850-1900).
- Humans caused it. The IPCC's 2021 Sixth Assessment Report stated it is 'unequivocal' that human activity — primarily burning fossil fuels — is the dominant cause.
- The impacts are accelerating. Sea level rise, extreme weather events, ice sheet loss, ocean acidification, and biodiversity loss are already observable.
- The window is closing. To limit warming to 1.5 degrees Celsius (the Paris Agreement's aspirational target), global emissions must fall roughly 43% by 2030 and reach net zero by 2050.
The science is not debated among climate researchers — the consensus exceeds 99%. But translating scientific findings into political action is where climate diplomacy begins.