We want to continue to deepen our relationship around research and development, around civil nuclear power, around how we can strengthen trade between our two countries.

WHITEHOUSE: President Obama Takes a Question on Euro Debt Deal

This represents a big change in consumer psychology, claims Mr Kelly, and one that is likely to deepen over time: market research suggests that 35-year-olds have a much stronger desire to lead healthy lifestyles than 65-year-olds.

ECONOMIST: Health consumerism

By working bilaterally and multilaterally on using outer space for civilian purposes, mitigating space congestion, and increasing our knowledge base via research and development, the United States and Brazil will deepen our strong and collaborative partnership.

WHITEHOUSE: Fact Sheet: The U.S.-Brazil Global Partnership Dialogue

"For Facebook the main challenge is not just to grow in terms of numbers, but more importantly to deepen and enrich engagements, " said Eden Zoller, principal analyst at tech research firm Ovum.

BBC: North America

The tax cut will deepen its deficit by another 0.7% of GDP next year, according to DIW, a German research institute.

ECONOMIST: From third way to Thatcherism

The arrival of the Watson system will enable new leading-edge research at Rensselaer, and afford faculty and students an opportunity to find new uses for Watson and deepen the systems' cognitive capabilities.

ENGADGET: Watson heading to college, honing administrator-pranking algorithms

We agreed to deepen our cooperation in pursuit of clean energy technologies, and this includes the creation of a new clean energy research center here in India, and continuing our joint research into solar, biofuels, shale gas, and building efficiency.

WHITEHOUSE: President Obama and Prime Minister Singh Press Availability | The White House