Scientists Identify Gene Linked to Aging in Humans

Scientists believe that they have identified the gene process that is linked to aging and the results are very interesting.  For example, people age at different rates as programmed by DNA.

A structure called a telomeres, inside the gene seems to be the candlestick that is burnt by time.  As cells divide and are continually replaced, the wick of the telomere will continue to shorten.  Inheritance dictates how long the telomere is to begin life and the rate of shortening also seems to be influenced by inheritance.

Professor Tim Spector from King's College London and director of the TwinsUK study, who co-led this project, added: "Genetically susceptible people may age even faster when exposed to proven 'bad' environments for telomeres like smoking, obesity or lack of exercise - and end up several years biologically older or succumbing to more age-related diseases."

 

http://www.physorg.com/news184769662.html

Half Human and Half Virus; A New View

I have been sitting on this, trying to make sense of it.  Basically, we are the result of a DNA virus.  Have a great weekend!

Seriously, some interesting facts about what you are:

1. Scientists expected 100,000 genes in the human DNA, we found 20,000
2. 34% of those 20,000 genes are considered "junk" because they copy themselves but serve no function.
3. Half of the human genome can be traced to a virus.
4. The virus genes have shown to be vital to the formation of specific organs in the human body.

In short, it is interesting to note that retroviruses that have symbiosis with our DNA may have helped to shape our evolution and development.

I, virus: Why you're only half human - life - 29 January 2010 - New Scientist

Ten Science Stories That Changed Our Decade - Top science stories - io9

As the year comes to a close, it is time to look back on the biggest science stories of the last decade.  Highlights include a new understanding of genetics, a new way to find planets, the Large Hadron Collider (LHC) and climate change.  Despite the negativity of climate change, this decade has shown hope in many areas.  Let's hope the next ten years bring some major advancements that can help us all.


Ten Science Stories That Changed Our Decade - Top science stories - io9

Photo from Southeast Public Health Training Center