Nuclear talks resume Wednesday between Iran and world powers after the last round stalled over issues that include Iran’s planned heavy water reactor and the levels of uranium enrichment. Iran later agreed to provide U.N. nuclear inspectors with greater information and access, but it’s uncertain whether the concessions will be enough to push envoys in Geneva closer to a deal. Iran seeks a rollback in U.S.-led economic sanctions, while the West is pressing it to curb its uranium enrichment – the process to make nuclear fuel. In the past decade, Iran’s nuclear program has advanced on many fronts and more facilities are planned. —ARAK HEAVY WATER REACTOR: Such reactors can run on non-enriched uranium as fuel and uses a molecular variant of water as a coolant. Heavy water reactors also produce more plutonium byproducts than conventional reactors. Plutonium can be used in […]