NASA | In The Zone

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Earths oceans are wide reaching and teeming with life. One microscopic aquatic organism plays a major role in making life on Earth possible: phytoplankton. Under certain conditions, excessive phytoplankton growth can result in an area known as a dead zone. Dead zones form when big blooms of phytoplankton at the surface trigger large quantities of organic matter, which then sink to the bottom. Bacteria break down the organic material, releasing carbon dioxide but absorbing oxygen as they work. Most marine organisms need oxygen for survival and dead zones prove fatal for many aquatic species. This short web video features dynamic animations, science data visualizations, and interview excerpts with a NASA oceanographer to explore this fascinating marine phenomenon.


For more info:
http://www.nasa.gov/centers/goddard/news/topstory/2008/dead_zones.html

Category:

Science & Technology

Tags:

• aquatic
• center
• dead
• earth
• flight
• goddard
• life
• marine
• nasa
• ocean
• plankton
• science
• space
• tv
• rich
• melnick
• zones
• maria
• frostic

[doubleD2212]

The scene showing the farm (1:49) shows exactly the type of farming that can reduce runoff, improve the soil and fight global warming by locking up carbon as humus; rotational grazing. Stronger plants, healthy soil, happier animals and more nutritious food are all benefits. The only drawback is that it provides lots of enjoyable jobs.

The dead zones are caused by runoff from lawns (fertilizer) and confinement farming (no pasture to absorb and utilize nutrients). Death to industrial agriculture

[MrDutchStone]

Asno, aprenda Inglés!

[CHardi1099]

This doesn't make sense! I know some environmentalist that go crazy about this supplement call FrequenSea. This supplement uses plankton from the sea. Now there is people falling in line for this Global Warming theory because a pharmaceutical company wants to fertilize the sea with Iron for support plankton life in which they have been extracting for sometime now. Now it's on yahoo front page. Are people ignorant? Can we say conspiracy, not Global Warming.

[NB5BHVL]

Doesn't he look like John Lennon ?

[BMWmotorrad14]

NASA is awesome. The really show how endless the search for new knowledge really is.

[KOB3000]

check out life on mars/tubes on mars ........was pretty amazed :D

[chamda1]

yes, the never go to the moon, they lies everitimes, urss has better. rusia was the first to the space.

sorry for my bad inglish, im from argentina

[freesk8]

I agree. We should end ALL foreign aid. Israel can defend itself without much trouble. I'm a fan of Israel, but it is not my right to tax my neighbors to send their money to my cause. If I want to defend Israel, I should write them a check. We give more foreign aid to Islamic nations surrounding Israel than to Israel herself. Ending it would be a net benefit to Israel, and we would no longer be a target for terroristic attacks.

Unenforcible laws erode respect for the rule of law.

[mll09101981]

not majority but some goes to terrorist*

[mll09101981]

your 9/11 statement is true but missing our support for the jews as well. so even if we took all of our bases out of the middle east they still wouldn't like us because we support & believe jews have a right to live in israel. their home country. & also a big part of our economy is oil and a majority of oil goes to terrorist funds. hands free that is true & false because it sets up an accountability kind of like drinking underage and smoking pot. we know people do those things.