For many years, people had dreamed of building a canal across Central America to link the Atlantic and Pacific Oceans.

VOA: special.2010.08.19

And,he says the subject of oceans interests him especially because he has been scuba diving since he was a child.

VOA: special.2009.03.25

It also needed a canal across Central America so the Navy could sail quickly between the Atlantic and Pacific oceans.

VOA: special.2010.08.12

And he proposed building a canal in central America to link the Atlantic and Pacific oceans.

VOA: special.2010.08.05

This mixing is a product of the oceans' density and buoyancy.

VOA: special.2011.06.22

"Whatever it is that happens in the oceans, happens to all of us." "A lot of our food resources come from our oceans.

VOA: standard.2010.06.08

Skeptics argue,however, that rising temperatures and warmer oceans are part of a natural cycle and are not convinced the changes are a result of man's pollution.

VOA: standard.2009.05.03

Walsh applauds those advances in technology, but laments that most of the world's deep oceans remain unexplored and that only a handful of vessels - manned or unmanned - exist to do the job.

VOA: standard.2010.06.21

"It is really pollution from our own use of space. Over the last 50 years we have been a bit careless, just as we have been careless with our oceans and rivers over centuries and polluted them.

VOA: standard.2010.07.24