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Environment Variables

Each episode we discuss the latest news regarding how to reduce the emissions of software and how the industry is dealing with its own environmental impact. Brought to you by The Green Software Foundation.


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  • 124. Root and Branch and SCI-Web

    01:00:48||Ep. 124
    Host Chris Adams talks with Adam Newman and Oli Winks of Root & Branch about their new Software Carbon Intensity Web model for measuring the real carbon footprint of websites. They break down why current methods miss the mark, how their bottom-up approach captures actual energy use across servers, networks and devices, and why better measurement can lead to smarter, lower-carbon choices for teams. It’s a candid look at what it really takes to make the web greener, and the tools that can help developers get there.Learn more about our people:Chris Adams: LinkedIn | GitHub | WebsiteAdam Newman: LinkedIn | GitHub | WebsiteOliver Winks: LinkedIn | GitHub | WebsiteFind out more about the GSF:The Green Software Foundation Website Sign up to the Green Software Foundation NewsletterNews:Software Carbon Intensity (SCI) Specification | GSF [00:48]Software Carbon Intensity (SCI) For Web: Measuring energy and emissions of web applications [02:03]Kitemill [09:32]Cardamon | Root & Branch [12:56]GitHub - Root-Branch/cardamon-web-model [32:09]Green Metrics Tool | green-coding.io [43:18]Green Software Brighton | Meetup [58:09]If you enjoyed this episode then please either:Follow, rate, and review on Apple PodcastsFollow and rate on SpotifyWatch our videos on The Green Software Foundation YouTube Channel!Connect with us on Twitter, Github and LinkedIn!

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  • 123. The Week in Green Software: Thirsty AI

    47:15||Ep. 123
    When artificial intelligence grows, so does its thirst. Chris Skipper hosts sustainability expert Valeria Salis, digging into the hidden cost of powering AI: the massive volumes of water needed to cool the data centers. From submerged servers off China’s coast to European communities pushing back on tech infrastructure, they discuss the environmental trade-offs and the push for solutions that keep innovation flowing without draining local resources.Learn more about our people:Chris Skipper: LinkedIn | WebsiteValeria Salis: LinkedIn | YouTube | WebsiteFind out more about the GSF:The Green Software Foundation Website Sign up to the Green Software Foundation NewsletterNews:China's HiCloud launches wind-powered underwater data center [07:21]Microsoft finds underwater datacenters are reliable and sustainable [24:26]Thirsty AI mega projects raise alarm in Europe’s driest regions [25:49] How datacenters are innovating with sustainability in mind [36:08]Resources:Green Software Italia 🌱 [03:18]Green Software Italia | LinkedIn Cloud Native Computing Foundation (CNCF) [11:06]Environment Variables Ep 59 | TWiGS: CNCF TAG Environmental Sustainability [11:25]Environment Variables Ep 14 | Community Clouds and Energy Islands with Dawn Nafus and Laura Watts [17:56]Green Software Movement [35:25] SCI for AI [41:16]Projects | GSF [41:46] 
  • 122. Software Architecture for Sustainability

    44:22||Ep. 122
    Guest host Anne Currie speaks with Karthik Vaidhyanathan, Assistant Professor at IIIT Hyderabad, about integrating sustainability into AI development. They discuss how the world can balance digital growth with renewable energy goals and how AI systems can be designed to be energy-efficient rather than energy-intensive. Karthik shares insights from his research on sustainable AI and MLOps, including dynamically selecting and retraining models to cut energy use and costs without compromising performance. The conversation underscores the importance of dynamic system design and collaboration across academia, industry, and government to make sustainability a core principle in software engineering.Learn more about our people:Anne Currie: LinkedIn | WebsiteKarthik Vaidhyanathan: LinkedIn | GitHub | WebsiteFind out more about the GSF:The Green Software Foundation Website Sign up to the Green Software Foundation NewsletterResources:Attention Is All You Need [06:34]Environment Variables Ep119 Backstage: The Green Software Movement Platform [13:16] SustAInd [33:01]HarmonE [36:00] SA4S @ SERC [36:33]If you enjoyed this episode then please either:Follow, rate, and review on Apple PodcastsFollow and rate on SpotifyWatch our videos on The Green Software Foundation YouTube Channel!Connect with us on Twitter, Github and LinkedIn!
  • 121. The Week in Green Software: Sustainability along the DevOps Lifecycle

    58:44||Ep. 121
    Guest host Anne Currie is joined by software engineer and sustainability advocate Julian Gommlich to explore how green practices can be embedded throughout the DevOps lifecycle. They discuss how modern operational practices like continuous delivery, automation, and agile iteration naturally align with sustainability goals, helping teams build more efficient, resilient, and energy-aware systems. The conversation covers real-world examples, from migrating to newer, more efficient software versions to understanding the carbon impact of data centers, and highlights why adopting a DevOps mindset is crucial for driving both environmental and business value in today’s rapidly changing digital landscape.Learn more about our people:Anne Currie: LinkedIn | WebsiteJulian Gommlich: LinkedIn | WebsiteFind out more about the GSF:The Green Software Foundation Website Sign up to the Green Software Foundation NewsletterResources:Power in Numbers: Mapping the electricity grid of the future w/ Olivier Corradi [31:02] Electricity Maps [31:58]Google’s huge new Essex datacentre to emit 570,000 tonnes of CO2 a year [41:06] Compute Gardener SchedulerScalable Platform for Reporting Usage and Cloud Emissions Events:BetterSoftware – October 3 · Turin, ItalySustainable AI: Energy, Water, and the Future of Growth – October 6 · San Francisco, USA Sustainable Coding: Rust Meets the Right to Repair – October 16 · ’s-Hertogenbosch, Netherlands
  • 120. Building Energy Awareness into Operating Systems

    01:05:29||Ep. 120
    Host Chris Adams speaks with Didi Hoffmann, CTO of Green Coding Solutions, about building energy awareness into operating systems and making sustainability a first-class concern in software development. They discuss Didi’s journey from Linux kernel programming to climate-focused tech and many more!Learn more about our people:Chris Adams: LinkedIn | GitHub | WebsiteDidi Hoffmann: LinkedIn | WebsiteFind out more about the GSF:The Green Software Foundation Website Sign up to the Green Software Foundation NewsletterResources:Green Coding Solutions [02:32]BioHof Potsdam [07:12]PowerLetrics: An Open-Source Framework for Power and Energy Metrics for Linux | IEEE [12:32]GitHub - green-kernel/powerletrics: Powermetrics for Linux Green Metrics Tool | green-coding.io [13:13]Green Screen Catalyst Fund [17:15]ProcPower | Prototype Fund [22:19]Green Kernel Wordpress Plugin | GitHub [27:09]GitHub - Green-Software-Foundation/real-time-cloud: Real Time Energy and Carbon Standards for Cloud Providers [36:48] Blue Angel for Software- Certificate Services | green-coding.io [38:52]Paris Conference December 10th and 11th 2025 | Green IO [56:58]Green Kernel · GitHubWhy We’re Exploring SCI Disclosure Certification | GSF  Events:ecoCompute conference [59:41]Code: ENVIRONMENT-VARIABLES
  • 119. Sustainable AI

    43:34||Ep. 119
  • 118. Backstage: The Green Software Movement Platform

    29:44||Ep. 118
    WIN FREE TICKETS TO GREEN IO LONDON:CLICK THIS LINK AND COMMENT BELOW TO WIN Learn more about our people:Chris Skipper: LinkedIn | WebsiteGosia Fricze: LinkedIn | WebsiteFind out more about the GSF:The Green Software Foundation Website Sign up to the Green Software Foundation NewsletterResources:Green Software Movement | GSF [04:33] Green Software Practitioner Course | GSF [17:56] Environment Variables Podcast | Ep 84 Backstage: SOFT (Previously TOSS) Project [24:42] Events:Green IO London Conference September 23 & 24 2025 [20:37] Events - Green Software Movement | GSFIf you enjoyed this episode then please either:Follow, rate, and review on Apple PodcastsFollow and rate on SpotifyWatch our videos on The Green Software Foundation YouTube Channel!Connect with us on Twitter, Github and LinkedIn!