Brief BioI was born and raised in Kalamazoo MI. I earned my bachelors of science in biology from Western Michigan University. I met and fell in love with a big goof of a man named Cliff. I have a fat lazy cat named Kerby and a dog named Bear. |
From Science Daily, iron (III) hexacyanoferrate (II) or Prussian blue salt when added to ammonia makes hydrogen cyanide. Which is an important building block when it comes to creating life. Leading to stuff like urea, lactic acid and dimethylhydantoin. Interesting bit about it concentrating carbon and creating hematite.
Post 100!
From Physorg.com, findings from the red planet shows that the amount of methane (CH4) in the Martian atmosphere is not caused by meteorites. So now the thinking is that it is caused by the reaction of rock with water and CO2 or it is biological.
Given the amount of CO2 in Mars’ atmosphere, I’m leaning toward the geologic origin. But one can dream of Martian Microbes.
From New Scientist, a list of how life could have started. I haven’t seen a detailed list like this on abiogeneses. Most of the research looks at replication or metabolism. This ties both together for the first time.
Also a longer article
From Science Daily, German scientists have discovered that using salts (NaCl, CaCl2, MgCl2 and KCl) amino acids will form pyrroles. Pyrroles are important for photosynthesis.
From Fox News, Glycine has been found on comet Wild 2. Carbon 13 was used as an indicator of extraterrestrial origin.
From the NASA Spitzer news page, A look at the chemicals around smaller and cooler stars than the sun show that they do not have hydrogen cyanide, but acetylene. The speculation is that ultraviolet light is involved in the creation of HCN. Also small stars have extreme magnetic bursts that can be disruptive for life. So the implications for life on planets around these stars seems to be less likely than sun-like stars.
From Universe today, a look at banded iron formations, show the decrease of nickel in seawater over time. It is speculated that methanogens, which are known to need nickle, became less abundant and lead to the rise of oxygen producers and more complex life.
From Carnegie Institute for Science, about 2/3 of all known minerals have a biological origin. A major example of this are banded iron formations. The knowledge will aid in the search for life on other planets if certain minerals are found. The video interview of the lead author of the paper is good.
From New Scientist, while investigating the Mid-Atlantic Ridge, researchers have discovered supercritical fluid. And interestingly this fluid can leach important minerals(such as iron and manganese)from rock.
One of the big questions in the origin of life, is why are some chemicals right handed or left handed. Usually in a reaction, the two enantiomers are formed. And this is dependent on several factors. Looking at meteorites, scientists have found that in space there is a higher proportion of left-handed amino acids than expected.
Edit: After publishing this piece, I received information about a conference on this topic.
