JohnEdwa
JohnEdwa t1_j2rto65 wrote
Reply to comment by RickyBobbyBooBaa in Tobacco firms to partly pay for clean-up of butts by egapx
The solution is easy, you pay 15-40 cents extra when you buy the bottle, and get it back when you return it. Result, you get more than 90% of them recycled.
JohnEdwa t1_jcia5hw wrote
Reply to comment by supercobra78 in Open-source tool from MIT’s Senseable City Lab lets people check air quality, cheaply. by chrisdh79
But it doesn't have to be that expensive. That Purpleair Flex has a BME688, $13.5 in single quantity (<$7 if you buy in bulk), and two PMS-6003 which are around $40 in single quantity. Asking for $270 for a device that's idea is to gather crowd sourced data is a bit steep.
Meanwhile the European project uses a kit that costs less than $50 to put together, and that's in single quantity by people ordering the stuff from aliexpress.