I wouldn't call myself a "green warrior" but my parents raised me to be aware of the impact of little actions on the environment. Like keeping all my trash in my bag and just cleaning it out when I get home. Pocketing candy wrappers instead of dropping them on the street (heathens). Or recycling printouts as scratch paper because "trees died for them."
I was still pretty surprised to find out though that our culture of consuming meet has a big impact on the environment because of the sheer amount of animals that have to be raised, which in turn results into rising CO2 levels. Didn't know though that rising CO2 levels also impacted the nutrients we get on plants.