These islands are plumbed directly into the heart of the earth

It is down by nearly 5 since the beginning of 2011, matching the lowest level plumbed since the Bretton Woods System of pegged exchange rates collapsed in 1973.

Bill Stone, a maverick cave explorer who has plumbed Earth s deepest abysses, discusses his efforts to mine lunar ice for space fuel and to build an autonomous robot for studying Jupiter s moon Europa.

Conventional metal collectors are vulnerable to damage from freezing, so if they are water filled they must be carefully plumbed so they completely drain using gravity before freezing is expected, so that they do not crack.

In what I call the flushed and plumbed world that most of us in this room are lucky to live in, the most common symptoms associated with those diseases, diarrhea, is now a bit of a joke.

Can we explain the lack of significant progress in resolving such problems by any deficiency in the human intellect? Human beings have plumbed the mysteries of the world, resolved complex technical problems and created virtual worlds, yet people are continuing to die in the real world as a result of hunger, disease and violence.