LONDON—Global shares fell for a third successive day on Tuesday, while bond yields on both sides of the Atlantic soared on anxiety over when central banks might raise interest rates. MSCI’s All Country World Index, which tracks shares across 49 countries, was down 0.3 percent on the day after the start of trading in Europe. The 10-year U.S. Treasury yield hit 1.5444 percent, its highest level since Jun. 17, pulling up euro zone bond yields in its wake. Two-year Treasury yields surged to 18-month highs. A market measure of euro zone inflation expectations jumped to 1.81 percent, its highest level in two weeks. Surging yields pressured high-growth technology shares at the start of trading in Europe while fresh signs of a slowdown in China’s economy also weighed on investor sentiment, pushing the pan-European STOXX 600 index down over 1 percent. Britain’s FTSE 100 index fell 0.5 percent, while Germany’s DAX …