Climate at a Crossroads: Understanding Risk, Tipping Points, and Sea‑Level Rise

The Paris Agreement set a global goal to limit warming to 1.5°C, yet Earth has now exceeded this threshold for an entire year. A 1.5°C world brings escalating risks: stronger heatwaves, droughts, wildfires, and extreme rainfall. Hong Kong experienced these impacts in 2025, with the heaviest August rainfall since 1884, the hottest June on record, and an unprecedented number of rainstorm warnings and tropical cyclones. Surpassing 1.5°C increases the likelihood of tipping points, including weakening ocean circulation, rapid permafrost thaw, and widespread coral reef collapse. Rising seas are already threatening low‑lying regions. The window for action is rapidly closing. To secure a livable future, we must accelerate climate ambition and transition to resilient, net‑zero development.

Session Learnings:

• Understand the consequences of exceeding 1.5°C warming, including amplified extreme weather, sea‑level rise, and risks to vulnerable regions—illustrated through Hong Kong’s recent climate records.
• Recognize the potential for cascading climate tipping points, such as ocean circulation slowdown, permafrost thaw, and coral reef collapse, and their irreversible impacts on ecosystems and societies.
• Identify the urgent actions required for a net‑zero, climate‑resilient future, including energy transitions, ecosystem protection, emissions reductions, and the role of research and innovation in driving evidence‑based climate solutions.

Post-Event Actions:

• Integrate insights into decision‑making, applying the latest climate science to strengthen organizational strategies, risk assessments, and long‑term planning.
• Advance climate‑resilient and net‑zero initiatives, such as accelerating decarbonization efforts, scaling renewable energy, and supporting ecosystem protection within their spheres of influence.
• Champion cross‑sector collaboration, engaging with policymakers, researchers, and industry partners to develop and implement bold, evidence‑based climate solutions.