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Los Angeles, CA 90095</ref>
 
The NRC and ESF studies concludedcame to the conclusion that, though the potential for large-scale negative effects appears to be very low, it is not demonstrably zero<ref name=NRC2009>▼
The ICAMSR have as their main goal, that samples are certified safe in situ or in space first before they are returned to Earth.
 
{{bq|Having planetary/cometary samples certified as "biosphere safe" in space or in-situ before they are transferred to the Earth’s surface is our main goal and intention.<ref>[http://www.icamsr.org/charter.html ICAMSR - Charter]</ref>}}▼
 
▲The NRC and ESF studies concluded that, though the potential for large-scale negative effects appears to be very low, it is not demonstrably zero<ref name=NRC2009>
"Assessment of Planetary Protection Requirements for Mars Sample Return Missions", National Research Council, 2009, chapter 5, "The Potential for Large-Scale Effects".
 
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{{bq|The committee found that the potential for large-scale negative effects on Earth's inhabitants or environment by a returned martian life form appears to be low, but is not demonstrably zero.}}[http://www.nap.edu/openbook.php?record_id=12576&page=48 (page 48)]
The</ref> NRC. andThese ESF findings on risks of [[Environmental degradation|environmental disruption]] are accepted by most participants in this debate (with the notable exception of Robert Zubrin<ref name=zubrin>Robert Zubrin "Contamination From Mars: No Threat", [http://www.planetary.org/explore/the-planetary-report/ The Planetary Report] July/Aug. 2000, P.4–5</ref><ref name=zubrin-interview>[http://astronomy.nmsu.edu/cwc/Teaching/SpaceCol/sts497i/Zubrin/transcript.txt transcription of a tele-conference interview with ROBERT ZUBRIN] conducted on March 30, 2001 by the class members of STS497 I, "Space Colonization"; Instructor: Dr. Chris Churchill</ref>). As a result, it is agreed by most researchers that a full and open public debate of the back contamination issues is needed at an international level.<!--(NASA and ESF surveys both say this as well as other sources e.g.) --><ref name=esf2012_PP-debate>{{cite report |title=Mars Sample Return backward contamination - strategic advice |publisher= European Science Foundation |year=2012 |chapter=5: "The Potential for Large-Scale Effects"|url=http://science.nasa.gov/media/medialibrary/2013/01/17/ESF_Mars_Sample_Return_backward_contamination_study.pdf|quote=''RECOMMENDATION 10: ▼
</ref> .
 
▲The NRC and ESF findings on risks of [[Environmental degradation|environmental disruption]] are accepted by most participants in this debate (with the notable exception of Robert Zubrin<ref name=zubrin>Robert Zubrin "Contamination From Mars: No Threat", [http://www.planetary.org/explore/the-planetary-report/ The Planetary Report] July/Aug. 2000, P.4–5</ref><ref name=zubrin-interview>[http://astronomy.nmsu.edu/cwc/Teaching/SpaceCol/sts497i/Zubrin/transcript.txt transcription of a tele-conference interview with ROBERT ZUBRIN] conducted on March 30, 2001 by the class members of STS497 I, "Space Colonization"; Instructor: Dr. Chris Churchill</ref>). As a result, it is agreed by most researchers that a full and open public debate of the back contamination issues is needed at an international level.<!--(NASA and ESF surveys both say this as well as other sources e.g.) --><ref name=esf2012_PP-debate>{{cite report |title=Mars Sample Return backward contamination - strategic advice |publisher= European Science Foundation |year=2012 |chapter=5: "The Potential for Large-Scale Effects"|url=http://science.nasa.gov/media/medialibrary/2013/01/17/ESF_Mars_Sample_Return_backward_contamination_study.pdf|quote=''RECOMMENDATION 10:
Considering the global nature of the issue, consequences resulting from an unintended release
could be borne by a larger set of countries than
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and are open to representatives of all countries.''}}</ref> This is also a legal requirement.<ref name=esf2010_RALOS>[http://science.nasa.gov/media/medialibrary/2013/01/17/ESF_Mars_Sample_Return_backward_contamination_study.pdf Mars Sample Return backward contamination – Strategic advice and requirements] see 7.2: Responsibility and liability of States</ref><ref name=race>M. S. Race [http://salegos-scar.montana.edu/docs/Planetary%20Protection/AdvSpaceResVol18(1-2).pdf Planetary Protection, Legal Ambiguity, and the Decision Making Process for Mars Sample Return] Adv. Space Res. vol 18 no 1/2 pp (1/2)345-(1/2)350 1996</ref>
 
However, the view of NASA, and ESA, is that these risks can be contained and that a sample return can be carried out safely provided the correct precautions are taken. For details see [[Mars Sample Receiving Facility and sample containment]]
Because of these concerns, there are proposals to build a Mars Sample Receiving Facility. This needs to be of a novel design, as it has to function both as a clean room and as a biohazard laboratory
<ref name=MSRRF-clean-room-quote>{{cite report |title=Mars Sample Return
Receiving Facility - A Draft Test Protocol for Detecting Possible Biohazards in Martian Samples Returned to Earth |year=2002 |url=http://www.lpi.usra.edu/pss/presentations/200803/04-Atlas-PPSonMSR.pdf|quote=''A Sample Return Facility will require combining technologies used for constructing maximum containment laboratories (e.g. Biosafety Level 4 labs), which will be needed to ensure protection of Earth from the Mars samples, with cleanroom technologies, which will be needed to protect the Mars samples from Earth contamination.<br><br>• Such an integrated facility is not currently available.<br><br>Planetary Protection Requires Negative Air Flow to Protect Against Environmental Contamination Planetary Science and Planetary Protection Require Positive Air Flow to Protect Samples from Terrestrial Contamination''}}</ref>. It also has to contain possibly novel unknown lifeforms.
 
The ICAMSR are of the view that, given that equipment can fail and there can be accidents, such a sample return is hard to guarantee safe to the level that would be needed when the fate of the environment of Earth itself could be at stake. They recommend searching for life in situ first, and have as their main goal, that samples are certified safe in situ or in space first before they are returned to Earth.
The view of NASA, the ESA and the Office of Planetary Protection is that these risks can be contained and that a sample return can be carried out safely provided the correct precautions are taken. The reports stress the need for these precautions. The ESF report, for instance, recommends that release of a Martian particle under 0.05 microns is unacceptable under any circumstances.
 
▲{{bq|Having planetary/cometary samples certified as "biosphere safe" in space or in-situ before they are transferred to the Earth’s surface is our main goal and intention.<ref>[http://www.icamsr.org/charter.html ICAMSR - Charter]</ref>}}
 
==See also==
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