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the course of this country's future in

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the course of this country's future in
 

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the course of this country's future in
space has been set Space Station freedom

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space has been set Space Station freedom
 

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space has been set Space Station freedom
in low-earth orbit a permanent base on

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in low-earth orbit a permanent base on
 

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in low-earth orbit a permanent base on
the lunar surface and then before the

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the lunar surface and then before the
 

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the lunar surface and then before the
year 2020

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among many challenges to be met in

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among many challenges to be met in
 

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among many challenges to be met in
achieving these goals is an efficient

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achieving these goals is an efficient
 

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achieving these goals is an efficient
reliable way to provide spacefaring

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reliable way to provide spacefaring
 

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reliable way to provide spacefaring
crews with fresh air clean water and

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crews with fresh air clean water and
 

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crews with fresh air clean water and
nutritious field carrying enough of

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nutritious field carrying enough of
 

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nutritious field carrying enough of
these vital supplies onboard will be

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these vital supplies onboard will be
 

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these vital supplies onboard will be
costly and in many cases impossible

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costly and in many cases impossible
 

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costly and in many cases impossible
especially for lengthy missions seeking

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especially for lengthy missions seeking
 

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especially for lengthy missions seeking
alternatives researchers around the

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alternatives researchers around the
 

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alternatives researchers around the
country including a group at NASA's

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country including a group at NASA's
 

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country including a group at NASA's
Kennedy Space Center Florida are

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Kennedy Space Center Florida are
 

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Kennedy Space Center Florida are
developing a system where plants recycle

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developing a system where plants recycle
 

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developing a system where plants recycle
air water and waste and provide food

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air water and waste and provide food
 

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air water and waste and provide food
plants in a water-based nutrient

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plants in a water-based nutrient
 

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plants in a water-based nutrient
solution eliminates the need to carry

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solution eliminates the need to carry
 

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solution eliminates the need to carry
heavy soil into space the work of dr.

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heavy soil into space the work of dr.
 

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heavy soil into space the work of dr.
Steve Schwarzkopf an engineer at

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Steve Schwarzkopf an engineer at
 

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Steve Schwarzkopf an engineer at
Lockheed in Sunnyvale California

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Lockheed in Sunnyvale California
 

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Lockheed in Sunnyvale California
demonstrates how important it is to

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demonstrates how important it is to
 

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demonstrates how important it is to
control the content of nutrient

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control the content of nutrient
 

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control the content of nutrient
solutions he's discovering that when

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solutions he's discovering that when
 

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solutions he's discovering that when
tomatoes and lettuce are grown in the

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tomatoes and lettuce are grown in the
 

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tomatoes and lettuce are grown in the
same solution the lettuce doesn't fare

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same solution the lettuce doesn't fare
 

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same solution the lettuce doesn't fare
so well what we do not know yet is

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so well what we do not know yet is
 

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so well what we do not know yet is
whether this effect is caused by the

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whether this effect is caused by the
 

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whether this effect is caused by the
tomatoes putting out some kind of a

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tomatoes putting out some kind of a
 

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tomatoes putting out some kind of a
chemical into the nutrient solution

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chemical into the nutrient solution
 

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chemical into the nutrient solution
through the roots or whether it might be

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through the roots or whether it might be
 

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through the roots or whether it might be
due to the fact that they're taking up

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due to the fact that they're taking up
 

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due to the fact that they're taking up
some nutrient that the lettuce needs and

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some nutrient that the lettuce needs and
 

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some nutrient that the lettuce needs and
just not letting let us get it

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just not letting let us get it
 

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just not letting let us get it
researchers at NASA's Johnson Space

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researchers at NASA's Johnson Space
 

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researchers at NASA's Johnson Space
Center in Houston are growing plants in

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Center in Houston are growing plants in
 

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Center in Houston are growing plants in
soils similar to those on the lunar

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soils similar to those on the lunar
 

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soils similar to those on the lunar
surface their test chamber allows them

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surface their test chamber allows them
 

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surface their test chamber allows them
to work at reduced atmospheric pressures

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to work at reduced atmospheric pressures
 

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to work at reduced atmospheric pressures
likely to be used in habitats on the

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likely to be used in habitats on the
 

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likely to be used in habitats on the
Moon and Mars the JSC team is also

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Moon and Mars the JSC team is also
 

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Moon and Mars the JSC team is also
working to adapt physical chemical

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working to adapt physical chemical
 

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working to adapt physical chemical
systems from the Apollo and shuttle

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systems from the Apollo and shuttle
 

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systems from the Apollo and shuttle
programs to recycle on the land

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programs to recycle on the land
 

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programs to recycle on the land
breathing air dr. mark cliffs at NASA's

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breathing air dr. mark cliffs at NASA's
 

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breathing air dr. mark cliffs at NASA's
Ames Research Center in Mountain View

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Ames Research Center in Mountain View
 

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Ames Research Center in Mountain View
California is integrating other

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California is integrating other
 

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California is integrating other
recycling subsystems into a facility

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recycling subsystems into a facility
 

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recycling subsystems into a facility
called the solid machine air circulated

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called the solid machine air circulated
 

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called the solid machine air circulated
through a growth chamber collects

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through a growth chamber collects
 

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through a growth chamber collects
moisture released by leaves this air is

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moisture released by leaves this air is
 

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moisture released by leaves this air is
then drawn through an opening and the

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then drawn through an opening and the
 

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then drawn through an opening and the
rear of the chamber and piped into a

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rear of the chamber and piped into a
 

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rear of the chamber and piped into a
condenser which removes the water

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condenser which removes the water
 

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condenser which removes the water
preliminary analyses indicate this

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preliminary analyses indicate this
 

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preliminary analyses indicate this
recovered water is drinkable this could

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recovered water is drinkable this could
 

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recovered water is drinkable this could
now evolve into a different kind of

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now evolve into a different kind of
 

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now evolve into a different kind of
system tour perhaps we could utilize

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system tour perhaps we could utilize
 

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system tour perhaps we could utilize
grey water in the nutrient solution and

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grey water in the nutrient solution and
 

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grey water in the nutrient solution and
then recover essentially potable

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then recover essentially potable
 

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then recover essentially potable
drinking water

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drinking water
 

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drinking water
recycling in space enlisting the

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recycling in space enlisting the
 

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recycling in space enlisting the
expertise of scientists and engineers

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expertise of scientists and engineers
 

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expertise of scientists and engineers
around the country to support life

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around the country to support life
 

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around the country to support life
beyond Earth

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you