You can invest in testing apparatus and identify areas in need of environmental remediation, and then advocate/fundraise for the remediation. Lead exposure in

You can invest in testing apparatus and identify areas in need of environmental remediation, and then advocate/fundraise for the remediation. Lead exposure in children is highly correlated with crime rates, and is also negatively correlated with academic achievement. Helping to improve chances for success is definitely a micro thing you can do that has a macro effect.