[scns]

> By comparison, an average human exhales 1kg co2 per day. So you need four of those tanks to offset a single passenger passing by.

Passing by takes less then 24 hours.

[nerdponx]

"per day" is a rate and can be applied to any unit of time. 1kg per day is equivalent to 1/86400kg per second (1/(246060)). Math works out the same either way.

[dylan604]

Someone must have missed the news stories of airlines preferring to cancel flights leaving travelers stranded in airports for extended periods of time.

Seems like 24 hours in an airport is becoming routine /s