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Author Topic: Hair Keeps Chemical Record of Where You've Been  (Read 82 times)

Offline jayc

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Hair Keeps Chemical Record of Where You've Been
« on: July 07, 2010, 04:21:16 AM »
Hair Keeps Chemical Record of Where You've Been
7 July 2010, 11:15 am

In one cold case, the team was brought in to help identify the body of a 20-something woman who was found dead of stab wounds in 1971, but whose case remained unsolved. After analyzing the isotopes in her hair, the scientists were able to conclude that the woman had lived (and therefore drunk tap water and other beverages) in Northern California for at least 18 months before she died. That clue helped detectives focus their search.

With the help of missing persons records, DNA and other types of evidence, they were finally able to identify her as Mary Alice Willey -- providing, at least, some finality for family members and opening the possibility that her killer might be found.

Source: Things that make me go Hmmm...

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08/12/2010 11:13 AM

Scientists Use Light To Create Particles

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The possibility of doing something like this was suggested in 1934 by two American physicists, Dr. Gregory Breit and Dr. John A. Wheeler. But more than six decades passed before any laboratory could pump enough power into colliding beams of radiation to conjure up matter from nothingness. The Stanford accelerator finally provided enough energy to do it.

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Genetically modified Plants Escape Into American Wild

weedGenetically modified canola plants have been found growing wild in the U.S., in some cases far from fields of cultivated genetically modified canola.

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1-in-1,000 Chance of Asteroid Impact in 2182

WhoaThe not-so-romantically named (101955) 1999 RQ36 -- discovered in 1999 -- measures approximately 510 meters in diameter and is classified as an Apollo asteroid. Apollo asteroids pose a threat to our planet as they routinely cross Earth's orbit.
With a one-in-a-thousand chance of 1999 RQ36 hitting Earth -- with half of this probability indicating a 2182 impact -- the threat might not sound too acute.

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Poachers kill last female rhino in South African park

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07/15/2010 07:09 AM

In Politics, Sometimes The Facts Don't Matter

From NPR - New research suggests that misinformed people rarely change their minds when presented with the facts -- and often become even more attached to their beliefs. The finding raises questions about a key principle of a strong democracy: that a well-informed electorate is best.

Listen to the Broadcast