Daily Archives: April 23, 2012

Do viruses die?

Viruses can’t actually die as they aren’t alive in the first place. They do contain genetic material in the form of DNA or the related molecule RNA, but they cannot thrive independently, they must invade a host organism and hijack its genetic instructions. That said, it makes sense to talk of how long viruses can remain viable and capable of infection. The HIV virus responsible for AIDS and the influenza virus can’t survive more than a few hours outside a host organism … Continue reading

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Cadillac testing ‘Super Cruise’ feature for future cars

Cadillac is reportedly joining the crowd working on features that it says should reduce car accidents by allowing the car to drive itself under optimal conditions, relieving the driver from fatigue, making road trips safer for the driver and passengers. Currently, Cadillac is already offering features that intercede on the driver’s behalf should the vehicle “sense” a dangerous situation. The new technology, which GM says likely will make it into showrooms by the middle of the decade, should make cars … Continue reading

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Happy Birthday Rita

Has Dr. Rita Levi Montalcini unlocked the secret of eternal life? The oldest living and the longest-lived Nobel laureate in history, Montalcini celebrated her 103th birthday on Sunday. “I can say my mental capacity is greater today than when I was 20, since it has been enriched by so many experiences,” she says. Her longevity might be the result of an unusual potion she takes every day in the form of eye drops — a dose of nerve growth factor (NGF), … Continue reading

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Two Heads Sometimes Better Than One

Wise groups follow the advice of confident decision makers. So do foolish groups. But a group’s success or failure depends on whether what’s commonly known corresponds to the truth in a given situation, a new study finds. Heeding recommendations of the most confident member of a two- or three-person group often works well, says psychologist Asher Koriat of the University of Haifa in Israel. That’s because in many settings, high confidence is associated with majority opinions, which are frequently correct about … Continue reading

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