The Scientist Live Audio Mailbag presented the questions submitted by readers to Dr. Jason Dworkin who worked on the study with Glavin.
Why did you choose to search the meteorites for isovaline specifically? The release glossed over it but I am interested in more detail, if possible. (Spencer C., Dundee, Scotland)
According to the release, 'The researchers looked for the amino acid isovaline and discovered that three types of carbonaceous meteorites had more of the left-handed version than the right-handed variety - as much as a record 18 percent more in the often-studied Murchison meteorite.' Why is 18% statistically significant? It does not actually seem like enough to for the basis of an assumption that chiral assymettry was brought via meteorites. (Arthur P., London, England)
How can you tell if a microbe is terrestrial or extra-terrestrial? (Jennifer E., St. Louis, USA)
You say, 'The team discovered meteorites with more water also had greater amounts of left-handed isovaline. 'This gives us a hint that the creation of extra left-handed amino acids had something to do with alteration by water.'' Can you explain how you conclude that the creation of extra left-handed amino acids is tied to water? (Petr N., Budapest, Hungary)
Would life forms based on right handed forms of amino acids function differently than left handed ones? (Lorenzo P., Bologna, Italy)
What other amino acids are found in outerspace? Do they function similarly when not under Earth-conditions? (Michelle K., New York, USA)
What is the next line of research for your lab? (Ed.)
For more information regarding the study and Dr. Rasgon's research, visit his webpage: