Analysis have shown how ancient bird bones can act as "chemical archives" of changing weather conditions in Antarctica.
Former NFL QB Matt Hasselbeck part of latest CTE frontier — diagnosing brain disease in the living
Hasselbeck, who played in the NFL for 17 years, hopes his involvement will aid researchers in finding ways to accurately diagnose the degenerative brain disease.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results