This design also needs almost double the amount of hexane... Not so environmenta...

londons_explore on Dec 20, 2018 | parent | context | favorite | on: Alphabet spinoff Malta raises $26M for technology ...

This design also needs almost double the amount of hexane...

Not so environmentally friendly...

Neither are used up though, and probably won't devalue with time, so the financial cost of them is just interest payments, and the environmental cost is zero.