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Gene mutation protects people against Alzheimer's disease

Researchers have discovered a rare gene mutation that protects people against Alzheimer's disease. We'll talk with Dr. Ronald Petersen of the Mayo Clinic about what the discovery means for treatment of Alzheimer's.

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BBC: Artificial blood

Is it possible to make artificial blood? As part of the BBC Discovery Series, Vivienne Parry looks at attempts to make it as medical professionals worry about donor shortages and infected supplies.

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New vaccine could prevent nicotine addiction

New vaccine could prevent nicotine addiction

Nicotine is a tough addiction to kick. But what if you could prevent the addiction in the first place? Weill Cornell Medical College researchers say they prevented addiction in mice with a vaccine.

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34 years after first test tube baby, ethical questions remain

34 years after first test tube baby, ethical questions remain

This month marks 34 years since the first test tube baby was born. While the procedures are becoming quite common, ethical questions linger. What are these concerns?

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Will the U.S. be independent from foreign oil in 20 years?

Will the U.S. be independent from foreign oil in 20 years?

Analysts believe that the United States may be inching toward independence from foreign oil in as little as 20 years. How would a shift in our dependence on oil change our foreign policy and interactions?

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The Week in Commentary

The Week in Commentary

A summary of the past week's commentaries and some of the comments they generated.

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Commentary: A new tick-borne virus to watch for

It's that time of the year when insect-borne viruses start appearing in the headlines. In fact, state health department officials just recently confirmed the year's first case of West Nile Virus in Minnesota. But physician and writer Dr. Craig Bowron is keeping his eye on a new tick-borne virus that he thinks bears watching.

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Mercury hurts kids, and it comes from mining

Our leaders should be asking hard questions before opening more land to mining.
by C.A. Arneson

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Martin Rees on "From Here to Infinity"

Martin Rees on "From Here to Infinity"

Is scientific theory inaccessible to the general public? Astrophysicist Martin Rees argues it's accessible to everyone in his new book, "From Here to Infinity." He joins us to discuss the ideas behind his book.

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Ambitious laptop program gets mixed grades

Ambitious laptop program gets mixed grades

Peru's distribution of more than 800,000 low-cost laptop computers to children across the country easily ranks as one of the world's most ambitious efforts to leverage digital technology in the fight against poverty.

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