A number of stocks fell in the afternoon session after the Dow Jones Industrial Average fell as much as 0.7%, reflecting lingering uncertainty, and capping off a volatile week which saw stocks enjoy ...

National security, unlocked. Each Thursday, host Mary Louise Kelly and a team of NPR correspondents discuss the biggest national security news of the week. With decades of reporting from battlefields ...

Computational models are mathematical models used to numerically study the behaviour of complex systems by means of a computer simulation. A computational model can be used to make predictions of the ...

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