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Stories by Cynthia Graber91 articles archived since 1845

This Plant Bleeds Nectar to Attract Help

When a species of nightshade is injured by hungry beetles, it produces sugary nectar at the wound site. The nectar attracts ants that then keep the beetles at bay.   

April 26, 2016 — Cynthia Graber

Quick Test Could Tell If a Patient Needs Antibiotics

Antibiotics work against bacterial infections but are often prescribed to people with viral infections, which don't respond to the drugs. But a new gene test could show if a patient's infection is viral or bacterial. 

January 26, 2016 — Cynthia Graber

Iceman Ötzi Died with a Bellyache

Researchers were able to determine the genome of stomach bacteria that infected the famous Iceman at the time of his death, in the process giving us clues about ancient human migrations. 

January 8, 2016 — Cynthia Graber

Urban Food Foraging Looks Fruitful

Fruits growing wild in urban areas were found to be healthful and to contain lower levels of lead than what's considered safe in drinking water 

November 18, 2015 — Cynthia Graber

Fall Foliage Timing Comes into Clearer Focus

Researchers picked apart satellite imagery from two New England forest ecosystems to get a better handle on exactly what factors influence the timing of the color changes of the autumn leaves

October 20, 2015 — Cynthia Graber

Designer Probiotics for Cancer

New research on mice demonstrates a way to use designer bacteria as a non-invasive test for cancer.

October 2, 2015 — Cynthia Graber and Eliene Augenbraun

Ancient Human Ancestors Heard Differently

Early human species may have had sharper hearing in certain frequencies than we enjoy, to facilitate short-range communication in an open environment. Cynthia Graber reports

September 25, 2015 — Cynthia Graber

Chinese Cave Graffiti Agrees with Site's Drought Evidence

Researchers linked dated graffiti about droughts in a cave in China to physical evidence in the cave of the water shortages, such as changes in ratios of stable isotopes in specific layers of stalagmites 

August 18, 2015 — Cynthia Graber

Microbes Deep under Seafloor Reflect Ancient Land Origins

Microbes 2,500 meters below the seafloor in Japan are most closely related to bacterial groups that thrive in forest soils on land, suggesting that they might be descendants of ones that survived when their terrestrial habitat was flooded 20 million years ago 

August 6, 2015 — Cynthia Graber

Diminutive Peoples Took Different Paths to Petite

Adults of the west African Baka people and east African Efé and Sua peoples average less than five feet tall. But while the Efé and Sua are born small, the Baka have slow growth rates in infancy 

August 3, 2015 — Cynthia Graber

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