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Half of the officers who have been fired or blocked from promotion are women or Black. A scholar who studies the US military explains why that's dangerous.

Learning another language is not a miracle cure for aging, and it cannot guarantee protection against Alzheimer's disease. But it does have various other benefits.

A political philosopher explains the ethical arguments in favor of free movement.

The country, and the world, have been losing diesel refining capacity for many years and can't just ramp up production to fill the shortages.

Seizure of the Bab el-Mandeb Strait complicates a widening conflict in the Persian Gulf. It also risks reigniting Yemen's civil war.

Italian immigrants used to be accused of clinging too tightly to the Old World. Today, millions gather in Little Italy to celebrate the food, faith and traditions they brought with them.

Laws against surreptitiously recording someone extend to home devices like robot vacuums, but those recordings can still be used against you in court.

Parents concerned about vaccine overload may not get the outcome they expect from Trump's recent vaccine executive order.

Because Trump picked this fight due to his concerns about Brazilian politics, that country's presidential elections might quell it soon.

Decades of pollution at Pittsburgh brownfields left bacteria that evolved to survive it - and maybe help clean up contaminated soil.