Straight Talking Sustainability

The conversation focused on the implications of the UNEP report Limiting Overshoot, which warns that global warming could reach 1.8°C even under the best-case pathway, with current policies potentially leading to 2.6°C.
The discussion explored whether sustainability professionals should replace the 1.5°C message with 1.8°C, or stay focused on the existing target. The answer depends on the audience. People who already understand the science may be ready to discuss overshoot in more depth. For others, introducing another number could create confusion, weaken existing targets, or encourage a “what’s the point?” response.
Key takeaways
The UNEP report says overshoot is unavoidable, but warming can still be brought back down through a “peak and decline” strategy.
Current policies could lead to 2.6°C of warming 04:18.
Every fraction of a degree above 1.5°C increases the risks 04:40.
The required actions include immediate emissions cuts, methane reductions, a rapid transition to net zero, carbon dioxide removal, and adaptation 05:15.
Don’t add complexity before people understand the basics of climate change, urgency, and agency 07:21.
If an organisation already has a 1.5°C target, introducing 1.8°C without context could muddy the waters 10:00.
Sustainability messaging should reflect the audience’s level of awareness and readiness 10:52.
If the basics aren’t in place, focus on carbon literacy training, lunch and learns, e-learning supported by real engagement, or showing the National Emergency Briefing 14:08.
If the basics are in place, identify what’s preventing faster emissions reductions, stronger advocacy, supply-chain transformation, or industry leadership 15:46.
Overwhelm can be reduced by finding the “nugget of truth,” breaking the issue down, and acting on what’s achievable 12:19.
Supporting sustainability teams matters, even when sustainability isn’t part of the job title 13:43.

Ask honestly:
Do the climate basics exist across the organisation?
Is the current target driving real progress?
What’s stopping faster and bigger carbon reductions?
Is there a rock in the way that needs to be identified and removed?

The episode’s central message is clear: 1.8°C is a warning, not a reason to stop. There’s still a great deal to do 18:47.
Yes, we’re heading towards 1.8 degrees of warming, but there’s still a damn lot we can do in the meantime. Don’t stay in overwhelm. Get the basics in place, support each other, and take action.
Limiting Overshoot UNEP Report
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This episode explores how businesses can bridge the gap between setting net zero targets and actually achieving them, moving from data collection to actionable strategies. Emma Burlow is joined by Louise Rehbinder, who delves into the Exponential Roadmap Initiative’s Five Pillars framework and its essential role in forming resilient, actionable net zero strategies for businesses of all sizes.
The Target-Action Gap:
Many companies have ambitious net zero goals, but employees are often unclear on how to achieve them. This episode discusses concrete ways to close that gap (Emma Burlow 00:01:19).

Intro to Exponential Roadmap Initiative:
Louise Rehbinder explains the organization’s mission, straddling think-tank and consultancy, and how they support corporates with up-to-date climate action guidance (Louise Rehbinder 00:02:16).

The Five Pillars Explained:
The Exponential Business Playbook is structured around five key pillars:
Reducing a company’s own emissions (Scope 1 and 2)
Value chain emissions (Scope 3: upstream, downstream, suppliers, customers, products)
Providing solutions that replace high-emission practices
Enabling mechanisms: finances and investment
Policy and social narrative for systemic change

(Louise Rehbinder 00:07:59 – 00:10:22)
Applicability to Small Businesses:
The playbook isn’t just for big corporates; it is designed to be accessible, with free tools like SME Climate Hub for smaller organizations (Louise Rehbinder 00:04:42).

Moving Beyond Data Collection:
The importance of balancing effort between getting accurate carbon accounting and actually implementing actions. Companies can make significant progress with available data without waiting for perfection (Louise Rehbinder 00:19:18).

Strategic vs. Operational Approaches:
How the playbook helps elevate climate action from operational and compliance-driven steps to integral parts of business strategy (Louise Rehbinder 00:33:18; Emma Burlow 00:33:25).

Practical Examples & Industry Leadership:
Some members use the playbook as the basis for company-wide strategy, particularly advanced IT, finance, or sustainability-led firms. Case studies include companies enabling broader systemic change, such as Stegra (Green Steel) and Unilever’s policy engagement (Louise Rehbinder 00:34:43–00:37:05).

Memorable Quotes
“Knowing your numbers does not reduce your emissions. …You need to also actually do the activities.” – Louise Rehbinder 00:17:52
“Climate is just one aspect that comes into play—something that will happen eventually. And it is about competitiveness for the companies.” – Louise Rehbinder 00:32:38

Resources Mentioned
Exponential Business Playbook
SME Climate Hub

Takeaways
The Five Pillars approach helps businesses systematically move from targets to tangible climate action.
Action and influence (Pillars 3, 4, and 5) are as crucial as accurate reporting (Pillars 1 and 2).
Tools and frameworks are freely available and can serve as “handholders” for sustainability teams at any stage.
Download the Exponential Roadmap Playbook: Exponential Roadmap Website
Connect with Louise Rebinder via LinkedIn or through the Roadmap Initiative.
More about the podcast and previous episodes: lighthouse-sustainability.co.uk

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Emma returns post-surgery with updates on Straight Talking Sustainability (STS) and Lighthouse Sustainability. She addresses current sustainability fatigue and the importance of moving beyond passive "lurking" online to taking action. The episode previews upcoming guests, reflects on the impact of community support and trainer development at Lighthouse, and shares ways listeners can get involved and stay motivated.
Sustainability Fatigue & The Need for Action
Many feel despair and fatigue about climate discourse right now (01:15).
Emma Berlow calls out the issue of “lurking” on social media instead of participating and emphasizes that wars are not won by lurking (04:22).
Upcoming episodes will tackle climate denial and focus on building resilience and collective action (03:05, 03:28).

Exciting Guest Line-Up
Louise Rehbinder (COO, Exponential Roadmap Initiative) to discuss the revised 5 Pillars model (episode 68 referenced) (05:28).
Sarah Mukherjee (CEO, ISEP, formerly IEMA) shares results from the State of the Environment Survey and job market trends (06:38).
Jo Alexander, who transitioned from fossil fuels to sustainability (07:11).
Rob Hopkins to discuss his book How to Fall in Love with the Future and potential for a podcast book list (08:05).
Jessica Riches, aka the OnlyFans climate change creator, on reaching new audiences with climate messaging (08:52).

Stay tuned for the 100th episode and more inspiring guest conversations!
Links:
Upcoming Carbon Literacy and Train the Trainer Courses
Remember use Code STS50 for 50% off at checkout on Carbon Literacy Open Courses.
Follow - Lighthouse Sustainability Instagram
Follow - Olabode Afurewaju Instagram
Bode our first sponsored Carbon Literacy Trainer describes his journey and his gratitude!
The Beacon Newsletter - LinkedIn Version
The Beacon Newsletter - Email Version
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This week is a special compilation episode as Emma recovers from surgery. The focus: recent political and media pushback on net zero and why system-based, foundational shifts are still crucial for meaningful progress.
Emma shares her own “pushback” against negative and misleading coverage, then compiles highlights from three recent solo episodes:
Mind the Gap: How to Close the Target Action Gap and Turn Your Workforce into Net Zero Champions
How Does System Change Actually Work? 3 Rules to Accelerate Net Zero
What Are the 5 Pillars of Net Zero? A Simple Maturity Framework

Media & Political Pushback
Frustration about misleading headlines and negative news regarding net zero progress (00:00:36).
Example: Criticism of public contract net zero rules, misleading stories on solar panel damage, and "gravy train" rhetoric (00:01:29).

The 5 Pillars of Net Zero (00:03:28 – 00:18:29)
Cutting Operational Emissions:

Focus on Scope 1 & 2 emissions—what you can control immediately; “start with what you know” (00:05:58).

Decarbonising the Value Chain:

Scope 3 is where the big emissions are—requires supplier and customer engagement (00:07:28).

Building & Scaling Solutions:

Pivot business models, promote climate-efficient solutions, and embrace new opportunities (00:08:53).

Mobilising Finance & Investment:

“Money will drive the transition”; shift towards low-carbon investment (00:10:14).

Shaping Policy and the Narrative:

Don’t underestimate your influence, whether internally (staff) or across sectors (00:12:07); leading and leaving groups as signals for change (00:15:03).

Systems Change & “Ambition Loops” (00:19:17 – 00:32:45)
Three rules for system change:

Harness ambition loops: Cycles where industry, policy, and public align for progress (00:21:09).
Set exponential goals: Avoid linear target setting—plan for rapid, doubling adoption (00:26:11).
Shared pathways: Collaborate across sectors to speed up change and reduce costs (00:29:47).

Closing the Target-Action Gap (00:32:38 – 00:51:13)
Many organizations have strong net zero targets, but little action outside sustainability teams.
Importance of carbon literacy, empowering “foot soldiers,” and moving from isolated action to company-wide engagement (00:40:41).
Practical task for listeners: Ask different roles in your business how confident they feel discussing net zero, to locate and bridge the confidence/action gap (00:47:41).

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In this summer episode, Emma Burlow reflects on how to communicate about sustainability in everyday work and life, inspired by an out-of-office response from Abby Chicken. Rather than overt activism, Emma Burlow suggests six subtle but powerful strategies for integrating sustainability into your communication and encouraging cultural change—without shouting from the rooftops.
The 6 Significant Shifts for Summer
Update Your Out-of-Office:

Instead of a generic auto-reply, use out-of-office messages to share sustainability stories, highlight your travel choices, or express climate concerns. Abby Chicken's thoughtful message offered a great example at 01:23.

Use Climate Stripes:

The climate stripes graphic (from the University of Reading) visually tells the story of rising temperatures without words. Add them to your LinkedIn banner, email footer, or as a background in meetings (08:45).
LINK #ShowYourStripes

Host a National Emergency Briefing Screening:

Organize a viewing, either subtly for interested colleagues or as a bigger event. The National Emergency Briefing now offers workplace screenings (10:13).
LINK National Emergency Briefing

Get Carbon Literate:

Take the “carbon literacy” training—even for sustainability professionals—to refresh knowledge and direction (11:51). Emma Burlow offers a special discount for listeners (see episode audio for details).
Carbon Literacy Training - Lighthouse Sustainability
Use Code STS50 for 50% off individual Carbon Literacy training places on our Open courses in 2026.

Role Modelling:

Share and normalize sustainable habits like walking, cycling, taking the train, or eating vegan—even just mentioning them helps shift culture (14:14).

Share Your Everyday Actions:

Highlight any sustainable or community-oriented activities such as repairing items, using a tool library, or swapping clothes (18:14). Small “Trojan mice” nudges can be more powerful than grand gestures.

Key Quotes
“Small “Trojan mice” nudges can be more powerful than grand gestures."
“Facts and evidence don't move people. Peer pressure and feeling part of a tribe is what moves people.” — Emma Burlow 16:04

Call to Action
Try one (or more) of the six shifts above in your workplace or community.
Rate and review the podcast on Spotify/Apple to help more people find it (00:44).
Connect with Emma Burlow on LinkedIn, visit lighthouse-sustainability.co.uk, and subscribe to the newsletter “The Beacon.”

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