It's sounds very idealistic, but it's mostly just using resources available to you naturally to keep a balance.  It's houses and building getting most of their energy from solar or wind. It's reusing what you can...everything from composting food waste and repurposing plastic and glass as needed and using those resources to further support food production.  One thing I really learned from these challenges is that the ability to live in a sustainable way is there...it's just a matter of doing it.

I really didn't know what else causes a large carbon footprint so I had to look some articles up on Google to figure this one out!
Cars and other modes of transportation apparently cause a large carbon footprint so reducing the amount you drive or travel can reduce this footprint.
Using appliances in your home is also responsible for a large carbon footprint.  Using electricity, coat, gas, and oil emits carbon dioxide into the air.  The appliances that put out the biggest carbon footprint are electric dryers, refrigerators, freezers, ovens, and dishwashers.  But by decreasing the use of these appliances or buy switching to energy efficient ones you can reduce the carbon footprint.
You can also decrease your own carbon footprint by using rain barrels to collect water for use on flowers and other purposes than drinking.

I don't like coffee which is responsible for deforestation.
But I love chocolate so I will have to look for cocoa products which have the Rainforest Alliance Certified Seal so I know the cocoa used in those products do not support deforestation.
Meat, dairy and eggs are not directly responsible for deforestation but they feed for the livestock is... I eat lots of burgers so will have to cut down on those but my dairy and eggs consumption isn't that high.
Apparently palm oil is responsible for mass deforestation in Africa, Indonesia, and Malaysia, but it is in everything!   It can be found in over 50% of all consumer goods!!  I read it is commonly found in processed food so I need to cut back on my intake of processed food and eat more fruit and vegetables!!

Microgrids help rural and low income areas that don't have access to electricity.  These grids use energy sources like wind or solar to provide electricity to these areas.
These solutions to bring electricity to areas who used to live without electricity have helped these populations by improving their local economies and making running a business easier.  This helps people to live better, provide for their families, and changing their lives for the better.

I came into this reading with the idea that family planning was an absolute right that women should have; in my opinion, any reproductive needs fall under basic health rights and should be available to all.  What I never considered, though, was the way this connected to climate change.  To me, it was always about individual choice, and whether or not someone had the information and availability of methods to decide when and if they had a children.  But i never really saw the bigger issue around how that relates to overpopulation and thus climate change. It's just another way most of our actions are tied to environmental impacts, and that's probably the biggest lesson I learned from the challenge...it's all interconnected and isn't really as simple as just recycling or using your car less. And while that can seem daunting, it's inspiring that the work to fight climate change is also the work to provide equal rights and to combat poverty, etc.

I kind of answered this in another reflection, so I'll use the same answer.  Mostly, it's for selfish reasons... I care because I have kids and it's unconscionable to do nothing when we're collectively leaving the world a worse (or non-existent!) place for them. But beyond that, we're all in this together, and this is going to affect everyone's kids and grandkids if we make it that far. We're already seeing the suffering climate change is causing and it's absolutely essential we do everything we can now.