environment
| Topic | Replies | Activity |
|---|---|---|
| Amazon orders 100k electric delivery trucks, plans to be carbon neutral by 2040 | 1 | September 19, 2019 |
| China trials smog towers to purify the air in cities | 1 | December 21, 2018 |
| CO2 rises for the first time in four years | 1 | November 27, 2018 |