The news:

Hawaii has become the first state to require solar water heaters in new homes.
Why it’s important:
- It requires the energy-saving systems in homes starting in 2010.
- The new law prohibits issuing building permits for single-family homes that do not have solar water heaters.
- Committee, first introduced the measure five years ago when he said a barrel of oil cost just $40. Since then, the cost of oil has more than tripled.