Being a high school teacher, I try to bring the best climate solutions to my classrooms. Geothermal is definitely one of them. Also, in my conscious raising work in our community, I try to help (new) people network with those who are already using geothermal systems in their homes. 

There is a growing movement among large corporations to move away from fossil fuels. The RE100 is one such group that is committed to switching to 100% renewable electricity by 2050 the latest. I try to only do business with those companies that have the strongest pledges as part of the RE100 campaign.
http://there100.org/companies
On a local level, I try to support those businesses that are conscious of their carbon footprint and are making a concerted effort to shift to renewable sources of electricity and heating. 

I noticed that in the assumptions made in the transportation sector, the projected EV share for 2050 is merely 16%. Global sales of plug in vehicles has already crossed 5 million in 2018. This was a 2.1% market share of new car sales in 2018. Some studies have  forecasted that sales of electric vehicles will hit 41 million by 2040, representing 35% of new light duty vehicle sales . I think that even that is conservative. I believe that as EV adoption follows an S curve, EVs will become a top 10 drawdown solution. 

I am lucky that I live in a town where nice trails are accessible. Walking is very much a part of the culture of our town. It made me wonder though as to how different would life be if I lived in a place where access to walking paths, especially in nature, was not common.

 Our city is a small one and the tallest building has 10-11 floors. I can envision a  turbine on top of it. 
We have many small farms in our region and I believe that they would make good candidates for micro-turbine systems. We already have many community solar projects coming into our part of NY. I wonder how they would compete/complement each other.

The most exciting solution still has to be nuclear energy. Perhaps I'm just biased, but I've always been fascinated that we can split atoms to produce energy. 

Curiosity, the mars rover, currently has a plutonium reactor on board to power it. This shows how nuclear can be used in relation to space travel. And its a small bit of plutonium too.

Not only that, but nuclear is used in some medical treatments and x rays, so it's a multipurpose tool

I found that I could have a big impact with necessarily making big changes to my diet but instead focusing on the sourcing of my food. Of course, I have the luxury of living in a place where that is easy to do. I am wondering how can we make it easier for many other people who may not have access to food sources that have low environmental impact?

I transplanted a couple trees in my yard for my own interests. I also helped out with a workday at the St. Marks National Wildlife Refuge, in which we planted and transplanted natural and local trees and plants. Since hurricane Michael devastated the area, it wiped away much of the local, vital and beautiful flora. In my own yard, because my family enjoys landscaping, we planted a couple of trees that hopefully will take off with the help of a caring hand. The refuge received the "ok" to plant and transplant many new trees and plants in hopes of recovering the coastline area. Only about 13 trees were planted, we mainly focused on tons of vital, yet smaller, plants that promote protection, soil anchoring, pollination, animal attraction and bring back beauty to the area. Physically, it's hard work out in the Florida sun, but the payoff is huge. Not only do we get a sense of accomplishment that we are helping to bring back and preserve the refuge, we also get to watch new life emerge. As the new flora grows, it will make the area look beautiful again and will restore tranquillity... at least until the next hurricane comes. Nonetheless, once we get to see the product of hard work in real action, we will be ecstatic and happy. Many of the restored trails will be pleasant to walk again, especially in springtime, as flowers emerge and animals of all kinds are attracted. Along with increasing the beauty, the trails and coastlines will all help hold the soil in place and protect our refuge.