American Airlines has filed a lawsuit against JetBlue after months of behind-the-scenes negotiations to resurrect their controversial Northeast Alliance collapsed. The Fort Worth-based carrier claims JetBlue owes its money after the alliance was terminated…

Beneath Greenland’s icy crust, scientists have found something unexpected—an ancient fragment of land once part of Earth’s shifting puzzle. New data hints at a deeper tectonic mystery unfolding beneath the Arctic.

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