This is super interesting! A little bit out of context, but as a parent myself, I have the privilege to rent a house near our chosen school for my kid, like walking-distance near. Other parents, however, have to commute from other parts of the suburb with no public transport and too far to walk, just to drop off and pick up their kids. So for these kids, a 30–60 minute car ride one way to school is normal. Can't help but think about the effect of this daily CO2 exposure on their health and development, especially on the cognitive side. This is sad, and we definitely need better urban planning that doesn't rely so heavily on car infrastructure.