Wasp's : Man's new best friends !!!!

If rewarded with sugary water, wasps can be trained in minutes to follow specific smells. The olfactory sensors in their antennae can sense chemicals in the air in concentrations as tiny as a few parts per billion. Wasps could be cost-effective helpers in searching for explosives, toxic chemicals, and even fungi on crops.



ATHENS, Ga. -- Wasps are not man's best friend -- probably their worst. But when it comes to sniffing out trouble, scientists believe they may be better than dogs.

They ward off intruders, track down criminals, find bombs and detect toxic chemicals, but dogs could soon be replaced by wasps. They have the same sensitive odor detection as dogs and are now being trained to sniff out trouble.


"The advantages of a wasp over a dog is you can produce them by the thousands. They are real inexpensive, and you can train them in a matter of minutes," Joe Lewis, a research entomologist at University of Georgia in Athens, tells DBIS.



He and Biological and agricultural engineer Glen Rains are doing just that. Olfactory sensors on the wasps' antennae can smell chemicals in concentrations as tiny as a few parts per billion in the air.



"So far, they've been able to detect, to some level, any chemical that we've trained them to," Rains tells DBIS.



Training is simple and quick. The wasps are fed sugar water. At the same time they're introduced to a smell for 10 seconds. The process is repeated two more times.



Lewis says, "We can train a wasp within a matter of 10 to 15 minutes."



For example, a set of wasps is trained to detect the smell of coffee. When they are put into a simple container, a tiny web camera watches their actions. When the smell of orange is pumped into the pipe, nothing. But when it's coffee, the wasps crowd around the smell.



So far, Rains and Lewis have not found anything the wasps cannot be trained to detect. They can be trained to detect everything from drugs to human remains to fungi on crops. They could one day even be able to detect deadly diseases like cancer.

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a bloody dilemma

if i had a full blood tranfusion one day and the next day commited  a crime but accidently left some of my blood on the scene would forensics be able to determine my DNA ??? ......... i hasten to add that i have no intention of doing anything as mentioned ........ just an errant thought that occured to me.... :)

what's wrong

let x = y be any non-zero number
then multiplying with x throughout gives :
x^2 = xy

and subtracting y^2 gives

x^2 - y^2 = xy - y^2
factorizing both the sides , we get:

(x+y)(x-y) = y(x-y)
x + y = y

2x = y

2 = 1

where is the flaw in the arguments ????