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Texas Fertilizer Plant Explodes; Unknown Number Killed

The explosion was reported around 7:50 p.m. from West Fertilizer plant in West, near Waco, Texas. Local news reports say that people were trapped in a nearby nursing home and in an apartment building.

Supreme Court Backs Warrants For Blood Tests In DUI Cases

The state of Missouri contended that because alcohol naturally dissipates in the bloodstream, each passing moment means valuable evidence is being lost, and so a warrant is never required for a blood draw. In an 8-to-1 vote, the Supreme Court disagreed.

Obama Uses And Loses Political Capital On Gun Control

The president had put his political weight behind expanded background checks. But if he couldn't get an important win on a popular measure in a Democratic-controlled Senate, what's in store for other parts of his second-term agenda?

More Prisoners Join Hunger Strike At Guantanamo

The number now stands at 52, the U.S. military says. The news comes just days after guards raided a section of the facility to move prisoners to single cells from their communal holding area because the detainees had covered security cameras.

Senate Rejects Expanded Background Checks For Gun Sales

The defeat of the measure by a 54-46 vote — six votes shy of the number needed to clear the Senate — marks a major setback for gun-control advocates

Science In A Scoop: Making Liquid Nitrogen Ice Cream

The days of made-to-order ice cream are far from over in San Francisco. A small shop that operates out of an old shipping container uses liquid nitrogen to freeze ingredients together in about a minute for an ultra-fresh, ultra-smooth treat.

Why Use A Pressure Cooker To Build A Bomb?

Pressure cooker bombs have long been used in places such as Afghanistan and Pakistan because they are cheap, easy to build and inconspicuous. They rely on basic principles of physics to amplify their explosive power.

What Boston Means To America

The bombing of Boston's storied marathon struck at more than a crowded city street — it attacked a living reservoir of American heritage, culture and intellectualism.