Your Questions on Heart Stents Including Those on Problems With New Stents Answered

What is a stent?
What is the difference between 'new' and 'old' stent?
Why was there a need for drug-eluting stent?
I am hearing a lot about problems with new stents. What exactly is wrong with new stents?
If new stents can cause fatal problems, why not take them off the market?
What about a moratorium on the new stents till the problem is better studied?
Does that mean that public safety does not matter? Are we going to let all those people die from this compication?
What are your thoughts?