At first, the seeds looked to eight-year-old Kelsei Douglas like eggs. She examined them, rolling the granules between her right index finger and the small concave of her left palm, and instead ...

Scientists have discovered helium-3 beneath northern Minnesota, a rare isotope once thought to exist mainly on the Moon.

"When she became first lady, she took a back seat. But for many, she is the power behind the throne or a top adviser," said Carmen Arteaga, a doctor of political science.