Tag Archives: DNA

Behind the Police Tape at a Forensic Science Program

This doll lists all of the symptoms of abrin, the toxin of the rosary pea (Abrus precatorius) seed. The red and black beans are often made into jewelry like the doll’s necklace. Photo by Nicholas Gerbis/KJZZ.

Every great investigator tells a story about the one that got away.

For Kimberly Kobojek, director of the forensic science program at Arizona State University’s West campus, formerly of the Phoenix Police Crime Lab, that white whale was a reddish brown stain.

Read/listen to my full story at KJZZ’s Arizona Science Desk:
Forensic Science Education at ASU: a Peek Behind the Police Tape

Citrus Roots Reach Back to the Himalayas

Citrus originated at the foot of the Himalayas. Artist’s conception by Manuel Talon, Instituto Valenciano de Investigaciones Agrarias (IVIA), Spain.

They say when life gives you lemons, make lemonade. But what if life hands you sour oranges and citrons?

Simple: You make lemons.

So says a new genetic analysis by an international team of scientists that seeks to clear up citrus’ tangled backstory.

Read/listen to my full story at KJZZ’s Arizona Science Desk:
Study Traces Citrus Family Tree To Foot Of The Himalayas

Microbes Spread Antibiotic Resistance One Bee at a Time

Photo courtesy Christopher Bang.

The World Health Organization has called antibiotic resistance “a global crisis we can’t ignore,” one that the Centers for Disease Control and Prevention estimate kills 23,000 people annually in the U.S. alone.

Now, honeybee research could offer clues as to how it spreads.

Read/listen to my full story at KJZZ’s Arizona Science Desk:
Honeybee Research Hints At How Microbes Spread Antibiotic Resistance

First Human Embryos Edited in U.S. by Scientists

An eight-cell human embryo. Image courtesy Robert Wood Johnson Medical School IVF program.

For the first time in the U.S., scientists have genetically modified human embryos. The technique could help screen out heritable diseases, but many worry where it might ultimately lead.

As rumors spread in advance of the publication, the story sparked comparisons with films like Gattaca and books like Brave New World, with their themes of genetic discrimination, DNA-as-destiny and the social dangers of tampering with human heredity.

But the research’s most important — and, to some, troubling — aspect lies in the fact that it alters the hereditary DNA known as the germline.

Read/listen to my full story at KJZZ’s Arizona Science Desk:
First Human Embryos Edited In U.S. By Scientists

Is Progress Outpacing Precaution? Experts Weigh In

Illustration by An Arres.

No one expects the machinery of progress to roll backwards, but sometimes it seems that no one is watching the speedometer (or manning the brakes, assuming any exist).  Is this a fair assessment? If so, should we be worried — and what can we do about it?

In this feature, experts on technology, risk, science, policy and neuroscience discuss risk, innovation and how our values affect our conceptions of both.

Read/listen to my full story at KJZZ’s Arizona Science Desk:
ASU Experts Weigh the Risks of Innovation