EUROPE is getting increasingly worried about nuclear fallout from the erstwhile communist republics. The G-7 leaders are expected to endorse a multibillion-dollar plan to improve the safety of nuclear reactors at their economic summit meeting in early July. The plan, which aims to prevent another Chernobyl, could cost anything between US $10 billion to US $20 billion. Officials at the International Atomic Energy Agency, who are helping to put the plan together, say that the programme would give the starved nuclear industry of Europe and America good business. Finland is already increasing its fallout readiness by distributing iodine pills to combat a buildup of radiation in the body.