Astronomy Now ranks "Solution of the Li mistery" by Lu, Bressan, Molaro & Marigo amon

"It may have had little fanfare, but one of the most perplexing problems of modern cosmology and astrophysics was solved this year. For decades scientists had puzzled over where all the lithium in stars had disappeared to. In the aftermath of the Big Bang, hydrogen, helium and lithium were the only three stable elements to form. Yet older stars have lithium abundances of only a third of what the Big Bang predicts. Was our understanding of the birth of the elements after the Big Bang wrong, or was something else going on inside these stars?" Read the complete article on Astronomy Now.