Six of Nine Planetary Boundaries Transgressed, Indicating Earth is Outside Safe Operating Space

Why It Matters

This research highlights the urgent need for designers and engineers to consider the systemic impacts of their work on global environmental systems. Understanding these transgressed boundaries is crucial for developing sustainable solutions that operate within planetary limits.

Key Finding

The planet is in an unsafe state for humans because six critical environmental limits have been crossed, with more potentially at risk.

Key Findings

• Six of the nine planetary boundaries have been transgressed.
• Earth is now well outside of the safe operating space for humanity.
• Ocean acidification is nearing its boundary, and aerosol loading regionally exceeds its boundary.
• Stratospheric ozone levels have shown slight recovery.
• Human appropriation of net primary production (HANPP) is proposed as a control variable for biosphere integrity and is also transgressed.

Research Evidence

Aim: To assess the current state of Earth's planetary boundaries and identify which are being transgressed.

Method: Earth system modeling and scientific review

Procedure: The study analyzed data related to nine planetary boundaries, updating previous assessments and proposing new control variables. It used Earth system modeling to illustrate the systemic impacts of transgressing climate and land system change boundaries.

Context: Global environmental systems and Earth system science

Design Principle

Design for planetary resilience: Prioritize solutions that contribute to the restoration and maintenance of Earth system functions within safe operating boundaries.

How to Apply

When undertaking a design project, explicitly map the potential impacts of the proposed solution against the nine planetary boundaries, prioritizing those that are already transgressed.

Limitations

The study focuses on global boundaries, and regional variations in impact and transgression may differ. The precise tipping points for some boundaries are still subject to ongoing research.

Student Guide (IB Design Technology)

Simple Explanation: Our planet has limits, and we've already crossed six of them, meaning it's not safe for us anymore. This means designs need to be much more careful about how they use resources and impact the environment.

Why This Matters: Understanding planetary boundaries helps you see the bigger picture of environmental challenges and design solutions that are truly sustainable and responsible on a global scale.

Critical Thinking: Given that six planetary boundaries are already transgressed, what are the ethical implications for designers and engineers in developing new products and technologies?

IA-Ready Paragraph: The current research indicates that six of the nine critical planetary boundaries have been transgressed, placing Earth outside a safe operating space for humanity. This necessitates a design approach that actively addresses these global environmental pressures, moving beyond incremental improvements to solutions that contribute to the restoration and stability of Earth systems.

Project Tips

• When defining the scope of your design project, consider its global environmental footprint.
• Research the current status of planetary boundaries relevant to your design's material use, energy consumption, and waste generation.

How to Use in IA

• Use the planetary boundaries framework to justify the need for your design solution and to set specific environmental targets.
• Analyze how your design choices (e.g., material selection, manufacturing process) impact specific transgressed boundaries.

Examiner Tips

• Demonstrate an understanding of the global environmental context in which your design operates.
• Clearly articulate how your design aims to mitigate impacts on transgressed planetary boundaries.

Strengths

• Comprehensive assessment of multiple critical environmental boundaries.
• Integrates Earth system science for a holistic view.

Critical Questions

• How can design actively contribute to bringing transgressed boundaries back into the safe operating space?
• What are the trade-offs when designing for one boundary that might negatively impact another?

Extended Essay Application

• Investigate the potential of a specific design intervention (e.g., a new material, a circular business model) to positively impact one or more transgressed planetary boundaries.
• Develop a framework for evaluating design solutions based on their contribution to planetary boundary restoration.

Source

Earth beyond six of nine planetary boundaries · Science Advances · 2023 · 10.1126/sciadv.adh2458