We’ve changed the climate; Can we change ourselves? | David Sauchyn | TEDxRegina

Key Concepts:

• Climate vs. Weather
• Personal Observation vs. Scientific Data
• Proximity Bias
• Unprecedented Events & Historical Context
• Tree Ring Analysis (Dendrochronology)
• Amplification of the Hydrological Cycle
• Climate Crisis & Drought
• Climate Resilient Communities
• Pedestrian-Centric Urban Planning
• Underconsumption & Slow Fashion

1. Climate vs. Weather and the Role of Personal Observation:

• The speaker begins by contrasting weather (short-term atmospheric conditions) with climate (long-term patterns based on 30 years of data).
• He shares an anecdote about a Jamaican man who doesn't discuss the weather, contrasting it with the speaker's own cultural background where weather is a common topic.
• He mentions a farmer who said he would only believe in climate change when he experienced weather he didn't expect, highlighting the reliance on personal observation.
• The speaker acknowledges the validity of personal experience, especially when dealing with complex issues like climate change.

2. Evidence of Climate Change in Saskatchewan:

• The speaker presents data from Indian Head, Saskatchewan, showing a decrease in the number of days with temperatures below -30°C since the 1950s.
• Before the 1950s, there were eight years with 30 or more days of -30°C. Since then, there has only been one such year.
• This data suggests that winters are becoming less cold.
• He notes that while warmer winters might seem appealing, they can lead to more pests and less water storage from snow.

3. Psychological Barriers to Addressing Climate Change:

• The speaker discusses how human brains are hardwired to deal with immediate problems, making it difficult to address long-term issues like climate change.
• He introduces the concept of "proximity bias," the tendency to consider risks as being nearby in time or space.
• He notes that people are more reactive than proactive and tend to relocate in hazardous places after disasters.
• He criticizes the tendency to label recurring disasters as "unprecedented," ignoring historical context.

4. Using Tree Rings to Reconstruct Past Climate:

• The speaker explains how his lab uses tree ring analysis (dendrochronology) to reconstruct past climate conditions.
• In dry climates, tree growth is primarily determined by water availability.
• By measuring millions of tree rings, they can determine how much water was running through the landscape of Saskatchewan.
• He presents a reconstruction of runoff in Swift Current Creek back to the year 1400.

5. Historical Droughts and the Amplification of the Hydrological Cycle:

• The tree ring data reveals that 2021 was the driest year since 1760.
• The data also shows periods of exceptionally wet years, indicating a "whiplash" between extremely dry and extremely wet conditions.
• This whiplash is consistent with the "amplification of the hydrological cycle" caused by a warming climate.
• The speaker warns of the possibility of decades-long droughts in a warmer climate, which could lead to a climate crisis in Saskatchewan.
• He references the Palliser Expedition, which concluded that a large part of the Canadian prairies would be "forever comparatively useless" due to drought.

6. The Need for Motivation Beyond Facts and Figures:

• The speaker acknowledges that facts and figures alone are not enough to motivate people to address climate change.
• He draws a parallel to advertising, which exploits emotions and insecurities to sell products.
• He proposes imagining a climate-resilient, healthy, and sustainable community.

7. The Vision of Car-Free Cities:

• The speaker used Google Gemini and Chat GBT to generate images of an idyllic modern city.
• All 20 images had one thing in common: no cars or trucks.
• He argues that there is a disconnect between the places people want to live and the car-centric cities that have been built.
• He cites Regina as an example, where 47.6% of downtown land is used for parking and there are more motor vehicles than people.
• He points out that the city incentivizes driving and discourages walking, despite the fact that many amenities are within walking distance.
• He mentions that 35 pedestrians have been killed by motor vehicles in Regina in the last 10 years.

8. Examples of Pedestrian-Centric Communities:

• He cites Helsinki, where one in three residents own a car, and downtown Oslo, which is essentially car-free, as examples of modern cities with reduced car dependence.
• He highlights Southwood Circle in Winnipeg, a community under construction where all transportation within a perimeter roadway will be by bike, foot, and skis.
• Southwood Circle will have workplaces, restaurants, shops, and workout facilities within walking distance of all residences.

9. Underconsumption and a Return to Simpler Living:

• The speaker suggests that the solution to climate change is simple but difficult because people are attached to their comfortable, fossil-fueled lifestyles.
• He draws inspiration from social media trends like underconsumption and slow fashion.
• He lists examples of underconsumption practices, such as cooking, wearing vintage clothing, hanging clothes out to dry, gardening, and eating leftovers.
• He notes that these practices were common a few generations ago when people lived within their means.
• He concludes by suggesting that curbing consumption could lead to a return to a simpler, more fulfilling way of life.

10. Conclusion:

• The speaker emphasizes that while the challenge of climate change is daunting, solutions exist and are within reach. By combining scientific understanding with historical context, addressing psychological barriers, and embracing sustainable practices, communities can build a more resilient and fulfilling future. The key takeaway is that a shift in mindset and lifestyle, inspired by both technological innovation and a return to simpler values, is essential for creating a truly sustainable world.