Protecting Food Crops on a Three Year Mars Mission

On a mission to Mars, astronauts would have to grow food. What happens if an insect stowaway starts destroying the crops? Gary Crawford has more.
var _gaq = _gaq || []; _gaq.push(['_setAccount', 'UA-16049511-2']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })();
On a mission to Mars, astronauts would have to grow food. What happens if an insect stowaway starts destroying the crops? Gary Crawford has more.