Showing posts from July, 2016

The meme the merrier

I have had the honor of having two memes made from the things I have said. I must thank @Sandra and @NancyDrew for both of them. [source] [source]

K-Pg boundary

Creationist "scientists" try to convince people that a global flood once happened because they think their holy book is right. To do that, they ignore scientific facts and they lie about science. One example is the K-Pg boundary. The K-Pg boundary has a number of characteristics that are evidence for an asteroid impact. A huge asteroid. The K-Pg boundary layer contains: Iridium - concentration of 30-160 times higher than usual  Shocked quartz - requiring intense pressures  Tektite glass spherules - formed by re-entry of debris into the atmosphere Chromium - isotopic anomalies associated with carbonaceous chondrites The Chicxulub impact crater has been found near the Yucatan peninsula and is, on average, 180 km in diameter. The boundary layer is thicker near the impact crater More shocked quartz is found closer to the impact crater More tektite glass spherules are found closer to the impact crater Creationist "scientists" ignore most of these scient

We are chordata!

After seeing this Youtube video by AronRa, I was inspired to make a related tweet. You know how it is. [ link ] As you can see, it's not a very popular tweet. Still, it's what this post is about; Human taxonomy . We are classified, by scientists, according to the similarities and differences we share with other organisms. This classification is done with the help of different fields within biology: embryology, morphology, genetics, etc. Ever since Linnaeus, thousands of biologists have been working on his taxonomic framework, expanding it and improving it. Thanks to the advent of DNA sequencing, phylogenetic trees are used to improve and refine it even further. No organism has ever been found on earth which doesn't have DNA. All organisms on earth have DNA sequences in common with each other. The top most global classification of humans is Neomura. We belong to a group of organisms that have glycoproteins. This is our Superdomain. We are neomuran. We share thi