Even the balmy tropics may have once been crushed by colossal masses of ice.

Maps show us how the US states have voted over time in 60 presidential elections — and who have been the winners and losers ...

Superintendent Megan Degenfelder addresses concerns that industry ties could muddle her work on state's behalf.

Researchers in Nebraska are exploring the Midcontinent Rift's potential to produce renewable, carbon-free hydrogen, possibly meeting energy needs for centuries. Around 1.1 billion years ago, the North ...