Talk of the Nation

Smartphones, tablets and computers could help seniors stay connected to their communities and families. But a hefty price tag, steep learning curves, and designs meant for younger eyes and hands could keep some older adults from logging on. Guests discuss the best ways for seniors to tackle new technology, and how devices can be adapted to accommodate older users.

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FLORA LICHTMAN, HOST:

This is SCIENCE FRIDAY. I'm Flora Lichtman, filling in for Ira Flatow today. Last year, researchers reported a breakthrough in treating Alzheimer's disease. They'd found a drug that appeared to reverse the symptoms of Alzheimer's in mice. The drug was already on the market, approved by the FDA to treat a type of skin cancer, meaning Alzheimer's patients could ask their doctors for a prescription, and some did.

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FLORA LICHTMAN, HOST:

This is SCIENCE FRIDAY. I'm Flora Lichtman. You've likely heard of the legendary explorers Lewis and Clark, but maybe not of the U.S. Army explorer Stephen Harriman Long, an engineer who led a scientific expedition through the Great Plains 15 years after Lewis and Clark.

His expedition traveled through Oklahoma, Kansas and Nebraska. And what did his crew make of "America's Breadbasket"? A place wholly unfit for cultivation or agriculture, they said. On a map, the explorers labeled the Great Plains as the Great American Desert.

Writings from childhood — cards, stories and other notes — can hide for decades, like time capsules tucked away in boxes, old bedrooms, attics and journals. Writer Jim Sollisch talks about how old thank you notes from his youth foreshadowed his adult life.

Beijing continues to pressure its neighbors over strings of disputed areas in the South China Sea that reportedly hold massive deposits of oil and gas. The ongoing disputes raise serious questions about China's goals in the region and how the United States should address escalating tensions.

In a speech at the National Defense University, President Barack Obama addresses the use of U.S. drones to target terrorists — including U.S. citizens — and his renewed efforts to close the military prison at Guantanamo Bay.

You've probably seen it in your inbox before: Someone who claims to have come into a fortune needs your help. You can share in the profits — if you send along a deposit or your bank account number. Boston Globe correspondent Finn Brunton talks about the history of the "Nigerian prince" or "419" scam, which actually got its start long before email.

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NEAL CONAN, HOST:

This is TALK OF THE NATION. I'm Neal Conan.

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NEAL CONAN, HOST:

This is TALK OF THE NATION. I'm Neal Conan, in Washington. Immigration reform heads to the Senate floor, ex-congressman Weiner guns for Gracie Mansion, and Senator Inhofe on the distinction between disaster aid for a superstorm and tornados. It's Wednesday, and time for a...

SENATOR JAMES INHOFE: Totally different...

CONAN: ...edition of the Political Junkie.

(SOUNDBITE OF ARCHIVED RECORDINGS)

PRESIDENT RONALD REAGAN: There you go again.

Apple CEO Timothy Cook made a rare appearance on Capitol Hill on Tuesday, testifying after congressional investigators revealed that Apple avoided billions in taxes. Reporter Charles Duhigg of The New York Times and guest host Jennifer Ludden talk about how, as Duhigg writes, "technology giants have taken advantage of tax codes written for an industrial age."