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The F-15E was the first American warplane confirmed shot down by Iran in the five-week war. A second U.S. combat plane crashed in the Gulf region and its lone pilot was rescued, U.S. officials said.

Commercial vessels are deploying high-tech sensors to map a shifting sea, providing critical data for scientists and some help for the industry. By Eric Niiler and Tristan Spinski The panel voted to ...

For more than 160 years, the National Academies have provided nonpartisan, evidence-based advice on decisions that affect our nation. Browse the listing of projects and activities to see examples of ...