Regarding safety, in an e-cigarette there is no tar or hundreds of other carcinogens released in the cigarette combustion process.

FORBES: Altria Group: E-Cigarettes Or Die?

The conference sessions will have deliberations on various topics such as urban reforms, safety and security, energy efficiency, environment, affordable housing and e-governance.

UNESCO: THEMES

"The state has an interest in maintaining a network of public safety throughout Oregon, " said Amy Wojcicki, a spokesperson for the governor, in an e-mail statement to CNN.

CNN: 911 calls go unanswered in some Oregon counties