Streptomycin is also occasionally used to treat infections such as brucellosis and endocarditis. As for TB, when treating these infections, streptomycin should be used in combination with another antibiotic to help prevent resistance occuring.
DEFINITION of 'Oil Shale'. A type of sedimentary rock composed chiefly of a combination of silt and clay. Shale may contain kerogen, a type of organic matter that yields oil and gas.
Fracking (fracing, hydraulic fracturing), or hydrofracking, is a method of mining for natural gas which greatly increases the efficiency of extracting shale gas from the ground. Geological experts claim that shale beds in New York, particularly the Marcellus Shale, contain more natural gas than previously estimated.