The air around is polluted. All those automobiles and industries spewing out all that smoke really has left our air polluted. Deforestration and industrialization has only made things worse. We aren’t brething in enough oxygen to make our brains work better. But somehow our economies and civilizations are getting better and better over the years.
Though there isn’t much that we can do about the polution in the entire planet’s atmosphere, we could make our lawn green and maintain it with gardening tools.