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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.
NPR

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.
NPR

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.
NPR

GOP Wooing Women & Minorities

The next presidential election is years away, but Republicans are already reaching out to women and minorities. But what does the GOP need to do to win over these voters? Host Michel Martin asks blogger Viviana Hurtado; PJ Media's Bridget Johnson; and political science professor Andra Gillespie.
NPR

Asa Hutchinson: Gitmo, Guns, And Governorship Plans

Host Michel Martin continues her conversation with former Congressman Asa Hutchinson, a Republican. They talk about a report that recommends the use of armed guards in schools, as well as Hutchinson's run for governor of Arkansas.
NPR

Guantanamo Bay, One Piece Of Torturous Puzzle?

Several Guantanamo Bay detainees are on a months-long hunger strike. But the U.S. may have bigger problems when it comes to detainee treatment. A bipartisan study says it's undeniable that the U.S. tortured people after 9/11. Host Michel Martin speaks with former Congressman Asa Hutchinson, a Republican, and one of the co-chairs of the study.
NPR

Letter Sent To Obama Tests Positive For Ricin, FBI Says

Meanwhile, police were investigating suspicious packages at Senate office buildings. This comes a day after a letter to the Senate contained a substance that initially tested positive for ricin.

NPR

A 'Whom Do You Hang With?' Map of America

Put away that old Rand McNally map — it's time for a new way to see what America really looks like.

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