Explainer-What's behind the selloff in world bond markets?

LONDON, Sept 1 : Government borrowing costs from the United States to Germany and Japan are at or near multi-decade peaks on heightened worries about inflation and rising interest rates, along with nagging anxiety about their debt loads. Elevated bond yields could squeeze households and companies as well as exacerbating government finances.Here's a look at what's behind the move in some major economies.WHAT'S GOING ON? Japan's 10-year bond yield hit 3 per cent on Tuesday for the first time since 1996, a milestone for an economy still emerging from an era of ultra-low rates. Britain's 30-year borrowing costs are at 30-year highs, and German and French 10-year yields are at levels last seen in 2011 and 2008 respectively.U.S. 30-year yields rose to their highest since 2007 earlier in August.A