Hello World, Hello Earth
Tags: news, podcast, technology, cloud
Published: 2021-04-22 21:59:04

Hello World is the first daily live stream broadcast on LearnTV: [aka.ms/helloworld](https://aka.ms/helloworld). Like a Hello World program, it is a simple and easy introduction to what is possible with technology, connecting communities inside and out of Microsoft to broader opportunities and knowledge.
The show is aired daily 10:30-11:00 AM PST in front of a live audience, and is available on-demand at [aka.ms/helloworld](https://aka.ms/helloworld).

This Wednesday, April 22 it was Earth Day and we had a special episode.

### Welcome and News
In this segment, [Nitya](https://twitter.com/nitya) shared some very interesting news related to our special theme of the day.
- Earth Day Cloud Skills Challenge: [aka.ms/earthdaycsc](https://www.microsoft.com/learncloudchallenge/e71a0acd-8463-4651-a001-0bb0e9dc62e5?helloworld-17228-cxa)  
- #VisualGreenTech Challenge: [aka.ms/earthday-visualgreentech](https://techcommunity.microsoft.com/t5/green-tech-blog/visualgreentech-challenge-earthday-2021/ba-p/2257548?helloworld-17228-cxa)  
- Minecraft: Sustainability City: [https://education.minecraft.net/lessons/radical-recycling](https://education.minecraft.net/lessons/radical-recycling)

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### Why Earth Day? [[00:20]](https://channel9.msdn.com/Shows/Hello-World/Hello-World-April-22-2021-Special-Hello-Earth#time=02m55s)
[![Alt Text](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/p82hsw3xvkgwoapsahf9.png)](https://channel9.msdn.com/Shows/Hello-World/Hello-World-April-22-2021-Special-Hello-Earth#time=02m55s)
Our special maestro of the day, [Asim Hussain](https://twitter.com/jawache) started the episode by explaining "Why Earth day"?
- Green Tech Blog: [aka.ms/greentech](https://docs.microsoft.com/learn/modules/sustainable-software-engineering-overview/?helloworld-17228-cxa)  

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### Hello Sara Bergman [[05:08]](https://channel9.msdn.com/Shows/Hello-World/Hello-World-April-22-2021-Special-Hello-Earth#time=05m08s)
[![Alt Text](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/8i9i90rwfnqo0hgoy2wl.png)](https://channel9.msdn.com/Shows/Hello-World/Hello-World-April-22-2021-Special-Hello-Earth#time=05m08s)
The first guest was Sara Bergman [@SaraEBergman](https://twitter.com/saraEBergman) to talked about electricity and sustainable software... Really interesting.  Learn how to define, build and run sustainable software applications: [aka.ms/sse/blog](https://devblogs.microsoft.com/sustainable-software?WT.mc_id=helloworld-17228-cxa) 

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### Hello Bill Johnson [[10:00]](https://channel9.msdn.com/Shows/Hello-World/Hello-World-April-22-2021-Special-Hello-Earth#time=10m00s)
[![Alt Text](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/4l8q0ycotp74ihrkyv2r.png)](https://channel9.msdn.com/Shows/Hello-World/Hello-World-April-22-2021-Special-Hello-Earth#time=10m00s)
Our second guest was Bill Johnson [@dubrie](https://twitter.com/dubrie) and he explains the concept of carbon awareness and gives us some great (and simple) ways to get started.
- Carbon-Aware Kubernetes: [aka.ms/sse/carbon-aware-kubernetes](https://devblogs.microsoft.com/sustainable-software/carbon-aware-kubernetes?helloworld-17228-cxa)  
- Sustainability in Site Reliability Engineering (SRE): [aka.ms/sse/blog/sustainabilitySRE](https://devblogs.microsoft.com/sustainable-software/sustainability-in-site-reliability-engineering-sre?helloworld-17228-cxa)  
- The Principles of Sustainable Software Engineering: [aka.ms/sse/learn](https://docs.microsoft.com/learn/modules/sustainable-software-engineering-overview?helloworld-17228-cxa)  

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### Hello Sarah Maston [[15:16]](https://channel9.msdn.com/Shows/Hello-World/Hello-World-April-22-2021-Special-Hello-Earth#time=15m16s)
[![Alt Text](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/2bsouqxifa5nxf9e60ex.png)](https://channel9.msdn.com/Shows/Hello-World/Hello-World-April-22-2021-Special-Hello-Earth#time=15m16s)
Next was Sarah Maston [@maston](https://twitter.com/maston) to that about his incredible project: Project 15 [aka.ms/project15](https://azure.microsoft.com/resources/videos/project-15?helloworld-17228-cxa). A cool name indeed, but what a great idea.

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### Visual Green Tech [[20:26]](https://channel9.msdn.com/Shows/Hello-World/Hello-World-April-22-2021-Special-Hello-Earth#time=20m26s)
[![Alt Text](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/uincl4it54w5ptmvevju.png)](https://channel9.msdn.com/Shows/Hello-World/Hello-World-April-22-2021-Special-Hello-Earth#time=20m26s)
Our last guest for this incredible episode was Locksley Kolakowski [@locksleylk](https://twitter.com/locksleylk). She is been doing the #VisualGreenTech Challenge every day since the beginning! Nitya will share some of Locksley art and ask the story of each. 

- [Microsoft 2-Phase Immersion Cooling](https://news.microsoft.com/innovation-stories/datacenter-liquid-cooling?helloworld-17228-cxa) 
- Locksley VisualGreenTech posts Week 1: https://www.locksleylk.com/2021/vgt-1 
- Locksley VisualGreenTech posts Week 2: https://www.locksleylk.com/2021/vgt-2 
- Visual Green Tech Challenge: [aka.ms/earthday-visualgreentech](https://techcommunity.microsoft.com/t5/green-tech-blog/visualgreentech-challenge-earthday-2021/ba-p/2257548?helloworld-17228-cxa)  

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### Happy Earth Day!
![Alt Text](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/upq6zljon14lw7q9ikcj.png)
You can watch this episode and all the other ones on-demand at https://aka.ms/HelloWorld.  And join us live Looking forward to seeing you there!

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