Title: Life forms that could be 50,000 years old found in caves in Mexico
Date: Feb 17, 2017
Summary: A science team discovered 40 different microbes suspected to be around 50,000 years old in underground caves of Mexico. They have very distinct genome, the closest relative still only share 90% similarity. They survived by consuming minerals found in the caves, like iron and manganese.
Connection: We’ve been discussing the metabolism of microbes, and they are an example of chemolithotrophs since they consume non-organic metals. It is an interesting look at the extreme conditions that microbes are able to live in.
Critical Analysis: The biggest shortcoming of this article is that it is relatively short. It may have been helpful if they linked to some of the primary sources and presentation given by these scientists. However, the information in the article seems accurate, they used many direct quotes by the scientists
Questions: What were these “extreme” conditions the microbes were found in? They mention it in the article but doesn’t state what the conditions were exactly.