Our guest in the studio is Christine Schweikert, commodities expert for BHF BankDW-TV: Ethanol is nothing new, but what’s interesting with Brazil is that it's helping them to become self-sufficient when it comes to fuel. Christine Schweikert, can we talk about Brazil's ethanol being a model for the rest of the world? Christine Schweikert: Brazil has got it easy in a way, as they've got the right climate and enough space to grow enough sugar cane for their ethanol. We would have to import it. You know, we've not got enough farming land to produce as much as we'd need, so we can't take that as a model, really - for Germany, at least.   DW-TV: All right, so the Brazilians have got a special case there. There's another interesting commodity in high demand right now connected with this rush to build electric cars right now - I'm talking about lithium. Lithium is needed in all of these batteries right now. Toyota is saying it plans to begin mining for lithium in Argentina. Could one say that lithium is the gold of the 21st century? Christine Schweikert: Well, I don't know whether it's the gold, but it's certainly an investment into the future, because the car market will have to shift towards other fuels, away from oil and things like that. So I think it's definitely a good idea to invest there. DW-TV: So many weird names right now on the market - new elements, trace elements, dysprosium, neodymium - I mean, it's a challenge just to speak about, just to pronounce those right now. A lot of investors are parking their money in these elements, thinking they're going to make a killing one day. As an analyst, do you see a goldmine there? Christine Schweikert: Well, it's difficult to say, because that's not really on our radar screen because it's such small markets, so you've got a very high volatility. Also, it's difficult to invest there - you'd really have to invest in a company that mines or produces or uses the stuff. So you can't really g...