Fresh air shops already exist. If the need grows, the supply will grow.
If atmospheric CO2 becomes a health risk, I could imagine future buildings having an attached greenhouse that provides a steady supply of fresh air.
According to this source, “Crops grown in controlled environment agriculture (CEA) production systems such as greenhouses and vertical farms in warehouses consume CO2 as they undergo photosynthesis when exposed to light. A typical greenhouse crop will use 4.8-9.6 kg per hour per acre. This process can drop the concentration of CO2 from ambient levels (around 400 ppm) to as low as 100 ppm if the production site is not ventilated.”
This means one acre of greenhouse can provide fresh air to about 15-30 people. That same greenhouse could also provide enough food to feed 5-7 people. Extreme weather will make 20th century style industrial agriculture increasingly fragile, so we’re going to need to switch to food forests and greenhouses anyway. Hooking those greenhouses up to housing so people can breathe would be a nice synergy.
“Son, good job on your science test. Seeing your hard work pay off is like a breath of fresh air.”
“Daddy, what is fresh air?”
*Sobs uncontrollably
Fresh air shops already exist. If the need grows, the supply will grow.
If atmospheric CO2 becomes a health risk, I could imagine future buildings having an attached greenhouse that provides a steady supply of fresh air.
According to this source, “Crops grown in controlled environment agriculture (CEA) production systems such as greenhouses and vertical farms in warehouses consume CO2 as they undergo photosynthesis when exposed to light. A typical greenhouse crop will use 4.8-9.6 kg per hour per acre. This process can drop the concentration of CO2 from ambient levels (around 400 ppm) to as low as 100 ppm if the production site is not ventilated.”
This means one acre of greenhouse can provide fresh air to about 15-30 people. That same greenhouse could also provide enough food to feed 5-7 people. Extreme weather will make 20th century style industrial agriculture increasingly fragile, so we’re going to need to switch to food forests and greenhouses anyway. Hooking those greenhouses up to housing so people can breathe would be a nice synergy.
The kids can decide for themselves, but long before then I choose exit stage left.