Hydrogen is by far the most common element in the universe — it's what stars are mostly made of.

The lightest element might also be the stuff that saves the world, at least in the mind — and garage — of Timothy Dolan, who lives on Chestnut Hill Road in Trumbull. Over the last five years, he has been using the gas to run his barbecue, fuel a gas range, and even operate a lawn mower and a portable generator.

Last Tuesday, Governor Schwarzenegger issued an executive order that vetoed the California climate bill and replaced it with one of his own design. The vetoed bill contained a strict clause that would prevent out-of-state clean electricity, like the booming solar industry of Nevada, from competing with California companies. Schwarzenegger's replacement legislation is intended to allow free access to the California energy market, which leaves some worried about how California will be able to compete with electric companies in less regulated markets.

As the news of GENEVA (Reuters), the investors are betting on the renewable or clean energy. Meanwhile, the green themes are looking for healthy and sustainable returns. However, the road is full of hardships for the unwary.

One of the most noticeable of Gov. Arnold Schwarzenegger’s executive order on Tuesday increasing California’s renewable energy needs was his blunt stand against protectionism. Clean energy imported from other states was welcome, the governor said, to keep down electricity prices.