If shorter days and shifts in the weather zap your energy and make you feel blue, you’ve got classic symptoms of seasonal affective disorder (SAD). SAD is a form of depression triggered by changes in ...

Besides hiding from enemy drones, Norwegian reconnaissance soldiers trial their own unmanned craft to spy on adversaries.

Apr. 7, 2026 A gene called KLF5 may be a key force behind the spread of pancreatic cancer—but not in the way scientists expected. Rather than mutating DNA, it rewires how genes are turned on and off, ...

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