«Our research looked a very large population of U.S. veterans who had experienced either mild,
moderate or severe traumatic brain injury in an
effort to find an answer to whether a mild traumatic brain injury can
put someone at risk.»
For runners who are already meeting the recommended physical activity guidelines (150 minutes of
moderate - intensity physical activity every week), the extra
effort put in exercise can lessen the risk of heart disease even more.
Geoengineering proposals fall into at least three broad categories: 1) managing atmospheric greenhouse gases (e.g., ocean fertilization and atmospheric carbon capture and sequestration), 2) cooling the Earth by reflecting sunlight (e.g.,
putting reflective particles into the atmosphere,
putting mirrors in space to reflect the sun's energy, increasing surface reflectivity and altering the amount or characteristics of clouds), and 3)
moderating specific impacts of global warming (e.g.,
efforts to limit sea level rise by increasing land storage of water, protecting ice sheets or artificially enhancing mountain glaciers).