The SI derived unit for volume is the cubic meter. 1 cubic meter is equal to 264.172051242 gallon, or 1000 litre. Note that rounding errors may occur, so always check the results.
Snoring is a common problem, caused by a blockage of the nasal passages during sleep. Snoring can be a sign of a serious problem called sleep apnea, where you stop breathing for 10 seconds or more during sleep. There are two types of doctors who treat snoring problems: sleep medicine doctors and otolaryngologists (ear, nose and throat doctors). (AndreyPopov/iStock/Getty Images)
A neurologist might be the doctor of choice if your back or neck pain is chronic and longstanding, as she or he is an expert in the origins of pain. A neurologist does not perform spine surgery; instead, she will examine how well your nerves function, prescribe medication and refer you to on to another specialist, as appropriate.