Episode Details

In this timely and practical solo episode of Straight Talking Sustainability, host Emma Burlow challenges decades of climate communication focused on warming, heat, and melting ice caps by asking a provocative question: should we be talking more about global wetting, given that people find it incredibly easy to talk about weather (especially rain) but remarkably difficult to discuss sustainability or climate change?

Inspired by Professor Ed Hawkins' legendary climate visuals from the University of Reading (creator of the warming stripes), Emma demonstrates how shifting conversations from abstract global temperature averages to tangible rainfall increases, flooding disruption, and extreme weather costs creates immediate relevance for businesses, cuts through resistance, and opens doors for people who would never engage with traditional warming narratives.

Emma opens with a delightful icebreaker from Dr Matt Sawyer's Lighthouse carpentry project session: "what colour is the sky where you are?"

This simple weather question highlights how naturally we discuss meteorological conditions in the UK (will it ever stop raining becoming a constant refrain), yet struggle to connect these everyday observations to sustainability conversations.

The gap between acceptable, easy weather talk that trips off the tongue and awkward, sometimes political climate discussions represents a massive missed opportunity for engagement.

The episode introduces Ed Hawkins' climate visuals website (ed-hawkings.github.io) featuring not just the famous warming stripes but remarkable visualisations including 400 years of cherry blossom dates in Japan (showing progressively earlier blooming as temperatures rise), demonstrating that climate impacts extend far beyond heat to encompass timing, seasons, and precipitation patterns.

Emma argues that whilst warming, greenhouse effects, hot house earth terminology, net zero, and carbon reduction all link fundamentally to heat (alongside melting ice caps and sea level rise), these concepts remain hard to grasp on a day-to-day basis because they are incremental and abstract.

Global average temperature increases may mean colder conditions locally, or changes so gradual people genuinely have not noticed much warming, creating the persistent "so much for global warming" reaction when it is pouring rain.

This confusion reveals that common knowledge about why it is getting wetter simply does not exist, representing a critical communication gap that sustainability professionals can address.

The Science of Global Wetting Explained Simply:

Emma returns to basic chemistry and physics (acknowledging it has been a long time since most people engaged with these subjects) to explain the warming-to-wetting mechanism. Emissions rising from fossil fuel burning, deforestation, and other human activities cause carbon dioxide buildup trapping heat, slowly turning up Earth's thermostat.

Temperature rises create hundreds of impacts beyond the commonly-discussed melting ice, sea level rise, heatwaves, and wildfires. Climate responds to temperature increases through multiple mechanisms: warmer oceans store heat causing water expansion (raising sea levels, which blew Emma's mind), Arctic sea ice melt makes oceans darker so they absorb more heat (the albedo effect, another mind-blowing revelation), and crucially, for every degree the atmosphere warms it can hold approximately 7% more water, becoming more humid.

This represents the golden takeaway statistic: at roughly 1.5 degrees above pre-industrial levels, the atmosphere holds significantly more water. For regions in rain shadows like the UK (where Atlantic weather systems deliver precipitation), this means substantially more rain because the atmosphere carries more moisture.

The impacts become immediately tangible: heavier rain, stronger storms, more dangerous extreme weat