. >> nancy atkinson, your line is open. >> hi. there was a similar announcement of detection of both methane and organic materials tpwhack 2014 also by the curiosity rover. how is this announcement different or how have you built on the find frgs 2014 for this detection? michelle: we were just talking about beforehand. jen, do you want to take that? jen: sure , in 2014 we reported the discovery of chlorinated molecule, carbon structures that have chlorine attach. it was a significant discovery, the first time we were able to confirm organic molecules on mars. they was first time. we had been looking for this for a very long time with the hope we would find it with the vikings instruments in 1976 and finally with curiosity in landing on a lake bed that we could actually discover these. now what we're left with, what do these men? the thing about chlorinated molecules, it's not what you typically find in natural samples. so we weren't sure what the significance was at the time. however, it did give us a lot of motivation to keep loo

. >> thank you next is nancy atkinson speaker.com. your line is opened. >> hi. there was a similar announcement of detection of methane and organic materials back in 2014 also by the curiosity rover. how is this announcement different or how have you built the fiings from 2014 for this detection? >> i know we were talking about that beforehand. a very good question. jen you want to take that? >> sure. in 2014 we reported the discovery of chlorinated molecules that are carbon structures with a chlorine attached to them. and there was a few. it was a significant discovery. it was a first time we were able to confirm organic molecules on mars. it was the first time. and we ha been ok for this r a ve long time with the hops we would find it with the viking instruments in 1976 and with curiosity in landing on a lake bed, that we could actually discover these. now, we were left with what do these mean? the thing is that the chlorine molecules is not what you find in natural samples. and we weren't sure what the significance was at the time. however, it did give us a l