Our relationship is very complex, it is very broad, and it is very deep.

WHITEHOUSE: Press Briefing

"It is a very, very deep heritage and it has a long history including culture and language and music and food and many, many things, " he says.

BBC: Iraqi-Israeli musician's sounds of peace

The connection between the Sami people and their reindeer has been about survival in a hostile land and it runs very deep: there is a legacy lasting millennia of living together in the polar North.

BBC: Threat to life on Arctic frontline

It turns out that Lake Chad is not very deep and has dried up many times in the past, the last being about 2, 000 years ago.

FORBES: Magazine Article

All very helpful, even it is all buried a little too deep in a too long series of choices that begins with, of all things, spam.

FORBES: Suicide Prevention Comes to Facebook: A Life-Saving Option With A Dark Side

Now, the hole dug by the Great Recession is very deep, and we continue to climb out of it together as a country.

WHITEHOUSE: Press Briefing by Press Secretary Jay Carney,

Yes, social business is hard: It requires a deep rethinking of communication protocols internally and externally, and very often a re-alignment of functional teams.

FORBES: Social Business: You're Doing It All Wrong

It is very powerful, and when it starts making headlines, you can be sure that we are in deep trouble.

FORBES: When the Fed Makes Headlines, You Know We're In Trouble

"Part of our relationship is based on trust and confidence and very deep economic and cultural engagement, and part of it has clear components of distrust and uncertainty, " Campbell said.

NPR: Lew Visit Marks US-China Re-Engagement