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The Explainer: Plastics

Now that evidence suggests the metabolites of plasticizers in Alberto Contador's urine samples a reader wants to know if that's proof of

The Explainer: You’ve been served

A reader wants to know how Yaroslav Popovych, a Ukrainian national, who lives in Italy, can be forced to appear before a U.S. grand jury.

The Explainer: What is taking so long?

A reader wants to know why the UCI is dragging its heels in addressing the doping charges against Tour de France winner Alberto Contador.