Actually, the Russians were the winners based on percent of finalists/entries:

China 2.2% -- Russia 2.6% -- US 0.6%

Yerba Mate -- a popular tea in Argentina and other parts of South America has lithium in it. It is interesting that many claim that this tea makes them happier and more productive. I'm seeing it added more and more to "energy drinks" in the US, such as Red Bull.

I live in a college town, and I notice that it is consumed more and more by college kids.

Yerba Maté Chemical Features

From a chemical point of view, Ilex paraguariensis (Yerba Maté) can be evaluated under its food chemical aspect or as a raw material for several byproducts. Long before its chemical composition was known, Indians used Yerba Maté not only due to the beverage's taste but also and mainly because they knew its virtues, chiefly an increased resistance to fatigue and its thirst and hunger mitigation powers.

Studies show that the Yerba Maté has the following components: water, cellulose, gums, dextrin, mucilage, glucose, pentose, fat substances, aromatic resin, legumin, albumin, xanthine, theophylline, caffearin, folic acid, caffeic acid, viridic acid, chlorophyll, cholesterin and essence oil. Ashes contain great amounts of potassium, lithium, folic, sulfuric, carbon, chloric and citric acids, beside magnesium, manganese, iron, aluminum and arsenic traces.

Xanthine, theophylline and theobromine are three strongly related alkaloids found in Yerba Maté and are the most interesting compounds from a therapeutic standpoint.
The Yerba Maté's xanthine rate averages 1.60%, whereas it is 1.10% in infusions.

http://www.noborders.net/mate/ingredients.html

I sent for some seeds from India a couple of years ago. I have 5 plants growing. The one exposed to the most sun is doing the best. They do grow like weeds -- fast that is. I haven't harvested the seeds. I don't know how I'm going to squeeze them yet. I live in Gainesville, Florida. They seemed to survive the winter without too much damage. I don't think they could go too much further north.

If diesel conversion technology advances, a farmer could grow his own fuel and also sell the converted diesel -- cutting out the middle man.