Penny Stock Fortunes editor Greg Guenthner specializes in digging up the hard-to-find headlines that could lead to big gains for small-cap portfolios.

Yesterday, he ran a piece about a breakthrough technology called polymer energy. This turns recycled plastics into crude oil.

Greg reckons this proprietary technology will change recycling forever. He also reckons it could mean major gains for early investors…

Yes, coal prices have continues to rise across the globe. But of course, this pales in comparison to the continued run-up in petroleum, which has virtually paralyzed the wallets of many oil-reliant Americans.

It might seem a bit late to jump on the digital photography bandwagon. But Penny Sleuth’s Greg Guenthner says he has found the last hidden opportunity in the industry.

Public transport in cities is virtually guaranteed to expand as the price of gas rises, says Greg Guenthner in Penny Sleuth.

As new generations of buses emerge, modern technology will be used to provide greater efficiency, security and surveillance over a complex transport network. DRI Corporation’s (NASDAQ:TBUS) intelligent transportation system offers all of these. It can also spot mechanical failures and shut down individual units, all from a central hub.

Greg says this growth potential and the company’s strong fundamentals make this transportation stock an excellent profit play this year…

Coal. It’s dirty, and burning it generates massive amounts of CO2, which causes global warming. It’s also the America’s main source for power generation.

So what can be done, asks Greg Gunner Guenthner. Are there ways to make it cleaner? Carbon capture technology is a possibility, but it’s years away from being usable.

Oil is another massive polluter, and gets more expensive by the day. Looks like the only option is to invest in sustainable energy – the sooner the better.

Message boards on financial websites are interesting reads. People will say anything. But, there is one consistent theme that fascinates me…

The Bureau of Labor Statistics (BLS) reported another sharp increase in producer prices during March. Finished goods were up 1.1% and intermediate-level goods rose 2.3%, pushing the year-over-year rates to 6.9% and 10.6%, respectively, in the month of March — the biggest yearly increases in this price indicator since 1981.

While communist China is busy smashing protests in occupied Tibet, the country’s currency, the renminbi, is making record gains agains the US dollar.

China’s renminbi is in the ascendant, reports the Financial Times.

In July 005 the renminbi was re-valued at Rmb8.11/$1. Now it’s close to Rmb7/$1 and has gained some 4% against the dollar since the beginning of 2008.

Is this a sign of a change in policy by the Chinese towards their currency?