Redrow also noted a significant difference between the housing markets in Wales and England.

BBC: Mortgage market boosted by lending schemes, says Redrow

There also is a significant difference between what physicists believe should be the total amount of mass in the universe and what they have observed so far.

ENGADGET: AMS detects excess of positrons, could suggest existence of dark matter

To make a real difference, a technology would have to not only offer a low price, but also satisfy a significant share of demand.

FORBES: How The Price For Power Is Set