We've taken a conservative approach in our valuation assumptions, including continued erosion of the home entertainment market, and we expect this acquisition to create value for our shareholders.

ENGADGET: Disney acquires Lucasfilm for $4.05 billion, plans more Star Wars movies

The market would likely take a Greek default and subsequent exit as a sign that anything is possible in Western Europe, including further erosion of the currency union itself.

FORBES: Why The Euro Must Be Defended

"I hope there'll be at least some recognition of the serious and relentless erosion of public values, including those whose roots are in the rich heritage of religion, " he will say.

BBC: Riots 'result of me-first society' - bishop

According to the results of the new study, similar processes, including tectonic upheaval, icy lava eruptions, erosion and sedimentation by rivers, may also be factors on Saturn's largest moon.

MSN: Saturn's moon Titan may have seen Earth-like erosion

All of this has newsletters warning of the possibility that a deflationary spiral could wreak havoc on asset prices, including more sharp declines in stocks and even erosion of real estate values.

FORBES: Double-Dipping Into Deflation?

Experts gave an overview of current threats and challenges, including declining coral reefs and acidification (Scott Doney), sea level rise (Joe Appiott), coastal erosion, land-based sources of marine pollution, and overfishing (Brittany Baschuk).

UNESCO: Social and Human Sciences