This rapid increase in the number of buyers and their purchasing power will likely drive home prices into a bubble.

FORBES: The Housing Bubble Is Back

Proposed by Mexican theoretical physicist Miguel Alcubierre in 1994, the drive would propel a ship at superluminal speeds by creating a bubble of negative energy around it, expanding space (and time) behind the ship while compressing space in front of it.

MSN: Warp speed? Slowing down could be a real killer

It is hard to say whether gold is in a bubble, or if we have simply entered a new era of interconnectedness in the global economy that will continue to drive the demand for gold.

FORBES: Gold Bound For New Highs