Chemists developed two sustainable plastic alternatives to polyethylene, derived from plants, that can be recycled with a recovery rate of more than 96%, as low-waste, environmentally friendly replacements to conventional fossil fuel-based plastics. (Nature, 17 Feb)

[u/mvea]

https://academictimes.com/new-plant-based-plastics-can-be-chemically-recycled-with-near-perfect-efficiency/

[u/brunes]

It actually does.

The energy required to move an object is directly 1:1 correlated to its weight. To move twice the weight I burn twice the fuel which will cause twice the emissions.

I'm not saying the packaging is the majority weight, obviously it is usually only a fraction. BUT it is a significant factor when you're talking about a transport truck load.