"The most critical door opening for exploration in all of humanity, " is how Aldrin sees the mission's legacy.

CNN: King: Will Obama have health plan to deliver Wednesday?

As I mentioned, the work of APEC is absolutely critical to drive a continuing opening of markets.

WHITEHOUSE: Briefing by Deputy Press Secretary Josh Earnest

Yuvraj, who also returned figures of 4-28 with his left-arm spin, has now scored critical centuries in each of the opening two ODIs - earning himself two motorbikes for successive man-of-the-match awards.

BBC: Pietersen rues missed opportunity

Wal-Mart tried to get its existing stores right instead of building critical mass, which would have meant opening or buying another 400 or so hypermarkets.

ECONOMIST: Retailing

Hotel prices during the tournament have risen so sharply due to profiteering that Michel Platini, head of European football's governing body UEFA, was unusually critical when visiting Ukraine last month for the opening of a new airport terminal.

CNN: Putin criticizes Euro 2012 boycott calls

An emergency meeting in December brought in a number of changes, including reduced opening hours, but the situation is still critical.

BBC: Wragby pool to close in weeks say volunteers

He also told the crowd that he had donated the gray argyle sweater he last wore in Keene -- which drew several critical comments in the media -- to Liberty House, a transitional shelter opening for homeless veterans in Manchester, which put the sweater up for auction on the Web site eBay.

CNN: McGovern endorses Clark

So, going back to the opening comparison between the first halves of 2010 and 2011, here is where I see a critical divergence.

FORBES: Recessionary Differentiations