The return of bedbugs - YUCK

LA Times has two stories (here and here) on how the common bedbug is making a dramatic comeback after being banished in the second half of the 20th century. What caused this return?

(digression on unintended consequences)
Another example of the ban on DDT. The folks who are responsible for the ban on DDT have a LOT of blood on their hands. They are responsible for the death of more people then Stalin, Hitler, Mao, Pol Pot and Saddam combined. These five men killed millions of civilians (not counting soldiers in the wars they fought in) during their reigns. Exact numbers are hard to come by, but the number is likely to be around 75 million people. If you count their own soldiers they killed due to their military blunders, the number goes to over 100 million. Those who banned DDT have killed more because they allowed the mosquito that carries Malaria to make a major comeback in Africa, Asia and South America.

I'm not talking about the crop dusting of DDT over everything, that was foolish and overkill. I'm talking about spraying DDT on the walls inside a house to repel the bugs.

So now we have to learn how to identify the bedbug because it is appearing in many places and is easily transferable.