Now you Know

Loudness :
Sports car : 80-95 db

Loudness :
Heavy truck traffic : 90-100 db

Loudness :
Loud radio : 100 db

Loudness :
Motor cycle : 105 db

Loudness :
Pneumatic drill : 110 db

Loudness :
Thunder storm : 110 db

Loudness :
Rock music : 120 db

Loudness :
Aircraft noise : 90-120 db

Loudness :
Jet takeoff(at 100 meter distance) : 120 db

Loudness :
Jet engine(at 25 meter distance) : 140 db

Loudness :
Space vehicle launch (from a short distance) : 140-170 db

Medical Invention : malaria parasite
Inventor : ronald rose

Medical Invention : anti-polio vaccine
Inventor : salk, jonas e.

Medical Invention : chloroform
Inventor : simpson and harrison

Medical Invention : streptomycin
Inventor : waksman

Medical Invention : insulin ( as a palliative for diabetes)
Inventor : banting

Medical Invention : replacing the human heart
Inventor : barnard, christian

Medical Invention : cure of kala-a-zar fever
Inventor : brahmachari, u.n.

Medical Invention : isolation of metals by electricity; studied properties of chlorine
Inventor : davy

Medical Invention : sulpha drugs as bactericides
Inventor : domagk

Fact
The embryos of tiger sharks fight each other while in their mother's womb, the survivor being the baby shark that is born. .. More >>