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Local Las Vegas Valley breaking news from Nevada's most reliable source. Read about the latest updates happening in your region at Las Vegas Review-Journal.

Nevada team flies glider to world record in South America

An experimental sailplane built by the Minden-based Perlan Project team soared to a new unofficial world altitude record for engineless flight on Sunday, then broke that record by climbing to an altitude of 63,776 feet two days later.

Nevada researchers trace rise, fall of Roman Empire through ice

Scientists from the Desert Research Institute in Nevada have pioneered a way to pinpoint pivotal moments in Western civilization using ancient lead pollution trapped deep inside the Greenland ice sheet.

Nuclear reactor being tested in Nevada could power Mars mission

The Kilopower project, currently undergoing testing at the Nevada National Security Site, aims to develop a small, safe and reliable source of electricity for extended stays on the red planet or unmanned scientific missions in deep space.