I've been tracking my household's carbon footprint for three years now, and the biggest chunk by far isn't my car or my flights—it's the natural gas I use for heating and hot water. Switching to a heat pump would cut that by 70%, but the upfront cost is around $15,000 after rebates. Is individual action like this even meaningful when 100 companies are responsible for 71% of global emissions? I sometimes feel like we're being told to recycle while the real polluters get a pass. But then again, if everyone waited for the system to change, nothing would ever shift. Where do you draw the line between personal responsibility and systemic change?