No broadcast, cable, or satellite television. The best thing about that is we never see television commercials. Mostly we stream Netflix and watch DVDs. Netflix is $8.99 a month.
We avoid factory farm meat, especially pork. I'm mostly vegetarian and my wife is vegetarian approaching vegan.
All the dogs we've adopted come from the animal shelter. There's no reason to breed dogs when so many are abandoned. But I will confess, some of our dogs have been difficult, having suffered severe trauma before we adopted them.
I bought a new car once when I was young, single, and full of myself. I won't do that again. Our children learned to drive in that car, which was older than they were, and drove it regularly in college. That may have been the ultimate cause of the car's demise. The engine just wore out and I didn't want to rebuild it so I gave it away. I replaced it with a $900 car.
When my wife and I met we were both commuters, suffering daily 15 mph stop-and-go freeway traffic. Since then we've mostly been able to avoid the automobile commuter lifestyle.
I grew up in a place that was 99% white and kept that way by unethical and sometimes illegal means. Police harassment of non-white people was common, real estate people were cold towards non-white people, etc..
Leaving that place was one of the better decisions I've made in my life. My wife and I very deliberately chose not to raise our children in places like that.
My major "save the world" effort is to promote realistic sex education and easy access to free birth control.
If anything will get us out of the mess we humans have made of this planet it will be the political and economic empowerment of women.