Butterflies are probably the most beautiful creatures on earth. Those colorful wings captivates you with its beauty.
Have you ever thought whether those magical patterns are formed by true colors??? In fact, these clever insects trick you into believing that their wings possess true colors. The wings have what can be called biophotonic crystals that scatter light in some intriguing ways. Something our 21st century physicists have hard time replicating in labs!
These are some ridges of nano dimensions found on the surface of the wings. These creatures have been exploiting the potentials of nanotechnology for the past 30 million years!!!!
What you see here is not some fabric... but the wings of a butter fly. 
I found more details about this here. You may want to take a look at this site!
Flying Nano Wonders!!!!
Fwd: Hmmm!!!!!
Interesting!!!! Its interesting that I was not able to sign into this site...
Anyways, this gives me a perfect opportunity to test something! Posting through email. Let me see if it works....
Now, coming to the actual post...
Viroids were discovered very recently but they are believed to be present here on earth for as long as life itself! This was because of the fact that some of them exhibit hammerhead ribozyme activity.
They also have interesting way of replicating.......
I came across a mini review of viroids at sciencedirect.com . The paper was published in Febs Letters, volume 567, Issue 1, on 1st June 2004, Pages 42-48 .
Here is the link.
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T36-4C8DD9G-2&_user=10&_coverDate=06%2F01%2F2004&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=e491b0abfc3ed8806012a7ad81c01ee2
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Virus - Proteins
Viroids are strange infectious agents. Intriguing and very interesting!
These are nothing but a piece (often a small one) of circular single stranded RNA. These viroids are just 250 to 500 bases long. What makes it interesting is the fact that they like prions defy the concept of cellular organisation!
These RNAs replicate by Rolling circle model of replication.
They are capable of infecting cells and cause diseases.
Many plants diseases are now known to be caused by various viroids.
These are found to exibit catalytic activity as well. Catalyses reactions like forming or breaking covalent bonds.
The only (?) human disease caused by viroids is Hepatitis D...
RNA interference
Hi there! Here is something you will definitely like. The concept of RNA interference is explained in this video, I found in YouTube, very beautifully!!!!
If there is something in this world that never ceases to fascinate me is DNA. Especially, the fact that 6 ft of DNA is coiled into a compartment thats less than 3micrometre diameter. I found this amazing video on youtube. Enjoy!!!!!!