NASA | Science for a Hungry World: Part 3

This episode discusses land cover and land use change.

To find out more visit:
http://www.nasa.gov/topics/earth/features/ag_casts/index.html

Want more? Subscribe to NASA on iTunes!
http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewPodcast?id=283424434

Or get tweeted by NASA:
http://twitter.com/NASAGoddard

NASA remote sensing data is used to measure how much land is used for agriculture and where farms are in relation to population density. This episode explore the transition between native vegetation, farms, and cities. Satellites show where land use changes have been most significant.

Category:

Science & Technology

Tags:

• nasa
• goddard
• space
• flight
• center
• agriculture
• farming
• food
• vegetation
• earth
• science
• land
• use
• change

[chrismeachin]

TheCharleyCat - Thanks for your polite and intelligent contribution.

Did you even watch the film? And what have NASA got to do with food mountains?

Monitoring land use change is invaluable precisely so that we can use land, and therefore food, more efficiently.

The really fantastic part about comments like yours is that most people can ignore them as being sub-moronic and unworthy of engagement.

You are the weakest link, goodbye!

[MeX2004]

You don't get it do you? Its not down the hill from here on for you, its off the cliff for you morons from here on. :))

:))

[elinorahumada]

Admiring the time and effort you put into your video and detailed information you offer.

[fabioptorres]

Houston: We have a problem...

[rochelimit55555]

I feel sorry for you

[misterwolf29]

I consider the fact youre a bloody imbecile

[StefanAxelWels]

Its not table salt...

[StefanAxelWels]

Im interesting what happen with this salt in Aral sea. In this pic it obvious some toke it and this you use for wether control..Maby thats seceet but the heck.

[MeX2004]

But what if we can manufacture suitable material which can block infrared sunlight and are able to patch sunlight over certain areas that would create local situation like artificial rain forest effects or artificial high altitude effects to manipulate local weather.

I know these are the kinds of things we will need to learn from terraforming Venus. Can we change local weathers by changing the temperature of the large region and by manipulating high/low pressure system?

[MeX2004]

Consider the following facts:

a) Rain forests influence the rain fall

b) Most of the rain fall falls on the ocean itself

c) Plants need the high frequency spectrum of the light for photo synthesis not the lower heat side of spectrum.

What if in far distant future when we are able to carry large payloads into space and are able to patch sun light such a way to create localized weathers to channel rain falls to those areas which don't get enough rain fall.

I know it sound crazy in our time

[rwese]

I would have appreciated a better time-laps of the rain forest. 1975 vs 2009 is pretty steep.