Benchmark US Treasury yields fell to their lowest levels in at least 60 years on Wednesday, and stocks and commodities sold off as fears over the deepening eurozone debt crisis gripped investors. The euro fell below $1.24, near a two-year low, as Italian borrowing costs soared and concerns mounted over Spain's banking sector. Crude fell 3%. In equities markets, all three major indices on Wall Street fell more than 1%, and European and global shares also fell over 1%.