solar powered

5 big household expenses you can easily cut

While cutting out that daily latte may help your day-to-day expenses, cutting the cable service or a telephone line can mean hundreds or even thousands of dollars in savings.

An IPO Parade in Cleantech

Two cleantech start-ups, biofuel maker Codexis and solar-energy firm Solyndra, recently filed for IPOs, and others are rumored to be contemplating them, among them sexy electric car company Tesla Motors and smart grid integrated-technology maker Silver Spring Networks.