So planting trees isn't a solution barking in front of media like a lunatic IS the solution!

Most governments have banned non reusable or non recyclable plastic bags. There is an effort going on to develop biodegradable plastics.

Food wastage is happening in countries with good economies yet there are some countries in the world where people don't get anything to eat.

Yes, production processes will improve with time. 3d printing technology is the evidence for that.

Transportation is a serious concern as the world is dependent on fossil fuel for transportation and it will be a while before there is a permanent and ecofriendly solution is found. Current solution of battery powered vehicle is far from being ready. I have had a battery powered vehicle and it died on me in very first monsoon.