As the US moves step by step towards legalizing marijuana, use by teenagers is slowly decreasing.

Most of the plastic in the sea seems to end up in sediments at the bottom.

Maybe this means the oceans will clean themselves over time — if we stop dumping more. But it doesn't change the fact that plastic is doing lots of harm to wildlife now.

Pakistan's response to the murder of many students by suicide bomber-gunners: resume the death penalty.

Can you imagine anything more ridiculous than the idea that execution could deter attackers who expect to die in the attack?

England may prohibit smoking in a car with minors in it.

This seems like a good idea. Children get the idea of smoking from watching adults.

I object to referring to teenagers as "children", though. That is misleading.

"Smart cities" represent a scheme to regiment and control people, which threatens democracy too.