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All News tagged "biology"

Drexel Team Unveils Supermassive Dinosaur Dreadnoughtus

A Drexel-led team has described a new dinosaur species with the most complete skeleton ever found of one of the largest animals to ever walk the Earth. At 85 feet (26 m) long and weighing about 65 tons (59,300 kg) in life, Dreadnoughtus schrani is the largest land animal for which a body mass can be accurately calculated.

In the Drexel team's experiments, flies died after an average of 5.8 days when consuming a diet of the sweetener erythritol.

You Catch (and Kill) More Flies with This Sweetener

In a study that began as a sixth-grade science fair project, researchers at Drexel University have found that a popular non-nutritive sweetener, erythritol, may be an effective and human-safe insecticide. Erythritol, the main component of the sweetener Truvia®, was toxic to fruit flies in the Drexel team’s study.

A high-resolution digital image of the face of Kryptoglanis shajii

A Tiny, Toothy Catfish with Bulldog Snout Defies Classification

Kryptoglanis shajii is a strange fish — and the closer scientists look, the stranger it gets. This small subterranean catfish sees the light of day and human observers only rarely, when it turns up in springs, wells and flooded rice paddies in the Western Ghats mountain region of Kerala, India. Scientists at the Academy of Natural Sciences of Drexel University have recently provided a detailed description of this fish's bizarre bone structures.

Paperwasps in Different Castes Develop Different-Sized Sensory Brain Structures

A queen in a paperwasp colony largely stays in the dark. The worker wasps, who fly outside to seek food and building materials, see much more of the world around them. A new study led by Drexel professor Sean O'Donnell, PhD, indicates that the brain regions involved in sensory perception also develop differently in these castes, according to the different behavioral reliance on the senses.
germ vision

'Don’t Wash Your Chicken!' Video Vignettes Make Cooking Safer

Drexel food safety researchers have helped develop a new educational campaign to raise awareness that washing raw poultry prior to cooking risks spreading bacteria, without any benefit of removing or killing them.

Mitchell D'Rozario

Grad Student Helps Peers Strengthen Teaching Skills

When grad student Mitchell D'Rozario noticed his fellow teaching assistants struggling to be prepared to teach classes, he created workshops to help them strengthen their skills.

Victor Fiore

Biology Major Sinks Teeth Into Co-op Experience

Some students are lucky if they can work part time or full time at their co-op once it is finished, but biology major Victor Fiore is planning on spending all three co-ops, as well as the time in between, as a dental intern.

Vlad Ratushny

Eight Years and Counting: College of Medicine Grad Student Completes Combined Degree

College of Medicine grad student Vlad Ratushny enjoyed the sweet success of graduation last month after eight long years in the combined MD–PhD program.

Drexel at Philadelphia Science Festival and Philly Tech Week

As part of city’s vibrant scientific and technological community, Drexel University will play a big role in the 2013 Philadelphia Science Festival and Philly Tech Week on April 18-28. From a 29-story video game, to cutting-edge robotics, to an interactive Jazz concert, Drexel’s students, faculty and professional staff will be part of the programming for both week-long celebrations of the inquisitive and innovative spirits that are part of the fabric of the city.

Monkey Film Premieres in U.S., Encourages Biodiversity Protection in African Nation

Turtle biologists with digital SLR cameras may be on the verge of something extraordinary: Empowering a nation to save endangered monkeys and the idyllic island ecosystem they call home. The very unusual nature documentary the biologists produced will have its U.S. premiere at Drexel University on April 15.
Dr. Ted Daeschler

Fossil Fish Brings Broader Understanding of 'Fish-Eat-Fish' World

Scientists from the Academy of Natural Sciences of Drexel University have described another new lobe-finned fossil fish species from the same time and place in the Canadian Arctic as the famous precursor to limbed animals, Tiktaalik roseae, which they discovered several years ago.

nerve research March 2013

Making Axons Branch and Grow to Help Nerve Regeneration After Injury

Drexel researchers are a step closer to understanding how nerve cells are repaired at their farthest reaches after injury. Their findings were recently published in the Journal of Neuroscience.