The name 'senior' clubs refers to the 'flex' in the shaft of the  club. Clubs are grouped into the categories that denote how much  the club shaft will bend, or flex, during â¦ the swing. They are, in  ascending order of strength, or stiffness: Ladies, Seniors,  Regular, Stiff, and Tour.
Observed Climate Change. Over the past 60 years, Alaska has warmed more than twice as rapidly as the rest of the United States, with state-wide average annual air temperature increasing by 3Â°F and average winter temperature by 6Â°F, with substantial year-to-year and regional variability.
The chilling science on Alaskaâs melting permafrost. Up to a quarter of the permafrost that lies just under the ground surface in Alaska could thaw by the end of the century, releasing long-trapped carbon that could make its way into the atmosphere and exacerbate global warming, a new study finds. 1  Polygonal lakes created by melting permafrost on Alaskaâs North Slope.NASA.