: Methane is emitted during the production and transport of coal, natural gas, and oil. Methane emissions also result from livestock and other agricultural practices and by the decay of organic waste in municipal solid waste landfills.
Traumatic Brain Injury (TBI) - Levels of Severity. Mild TBI. Loss of consciousness is very brief, usually a few seconds or minutes. Loss of consciousness does not have to occur - the person may be dazed or confused. Testing and scans of the brain may appear normal. Most common: 75%-85% of all brain injuries are mild.
and cognitive impairments 6 months or longer post injury. There was a clear evidence of an association between penetrating head injury and long-term cognitive impairments. Pre-injury intelligence, volume of brain tissue lost and the brain region damaged are important modifiers of this association. Severe. is clearly related to long-term cognitive defects and there is suggestive evidence that this is true for moderate. as well.