Shares of Rentech (AMEX:RTK) are soaring today as word spreads about the company’s latest deal. Shares have more than doubled in less than two weeks.

This is how giants are born, one small advance at a time. It was just eleven days ago I last wrote about Rentech (AMEX:RTK) and its biofuel industry advances.

Shares of the company traded for just $0.62 on the day I wrote, “If done well, Fischer-Tropsch technology could be the transitive fuel source this country needs as it seeks its energy independence.”

Today those same shares traded as high as $2.24. That is a 260% gain in less than eight trading days.

The news keeps getting better for this company. Two weeks ago I was writing about its breakthrough in the aviation industry. A standards-creating board gave the go-ahead to use the company’s fuel in aviation-grade jet fuel.

It was a major step forward for