Bats, caves, danger and exotic locales. That should catch your students’ attention! The big story here is the co-evolution of viruses and their nonhuman animal hosts, who seem to have a harmless, symbiotic relationship with viruses that cause deadly outbreaks in humans. Though this story is about Marburg virus and a fruit bat, the concepts […]
Archive for the 'Evolution' Category
Hurdia victoria, the Giant Shrimp
Tuesday, March 24th, 2009 7:46 pm
Written by: Mary LeFever
An oxymoron? Perhaps, but 500 million years ago, such a creature roamed the vast seas. That was before the dinosaurs and concurrent with the Cambrian explosion. Scientists who put the fossil parts together described the giant shrimp this way:
. . . this underwater predator had a segmented body, a pair of claws and a circular […]
Posted in Topics: Evolution, Life Science, Methods of Science, Nature of Science, Science
A Breakthrough in Nerve Cell Regeneration
Tuesday, January 27th, 2009 7:58 am
Written by: Mary LeFever
When you conjure up an image of cells, what do you see? What do you think? You may see a snapshot of an animal tissue, perhaps with actively dividing cells. That’s understandable because, as animals ourselves, we’re aware that cells come from other cells, thus the need to undergo mitosis, or cell division, frequently.
But one […]
Posted in Topics: Cells, Evolution, Genetics, Life Science, Science
Granite Helps Scientists Piece Together Rodinia
Thursday, July 24th, 2008 12:35 pm
Written by: Brittany Wall
If you’ve taught plate tectonics at the middle school level, you’re probably quite familiar with the supercontinent Pangaea. But did you know that Pangaea was not the only supercontinent in earth’s history – just the last to date? Millions of years before Pangaea, another supercontinent known as Rodinia united all of earth’s landmass in an […]
Posted in Topics: Biodiversity, Earth Science, Education, Evolution
Mechanism for Antibiotic Resistance Discovered
Friday, May 9th, 2008 8:32 am
Written by: Mary LeFever
Those of us born after World War II have take antibiotics for granted. Strep throat? Ear infection? Acne? Bronchitis? Not a problem. Take the full prescribed antibiotic dose and you are cured. The reality of antibiotic resistant bacteria however, disrupts that scenario. No longer can we always trust in a full recovery from a bacterial […]
Posted in Topics: Biotechnology, Evolution, Genetics, Life Science, Science
One in Three Amphibian Species at Risk of Extinction
Friday, February 1st, 2008 6:58 am
Written by: Mary LeFever
No one wants to see pandas, polar bears, or penguins go extinct. Why have organizations like the World Wildlife Fund been so successful in garnering the general public’s support for their conservation efforts? Perhaps it is because we find these animals appealing on an affective level. In many people’s minds, they’re worth conserving for emotional […]
Posted in Topics: Biodiversity, Conservation, Evolution, Life Science
Human Sense of Smell Is More Sensitive Than You Might Think
Wednesday, December 12th, 2007 8:28 pm
Written by: Mary LeFever
ScienceDaily has brought us yet another interesting article related to the NSES Life Science Content Standard. My guess is that middle school teachers’ and students’ olfaction capabilities might be a bit superior to the general public’s, given my personal experience in teaching middle school! Nonetheless, scientists from Northwestern University’s School of Medicine report that imperceptible […]
Posted in Topics: Chemistry, Evolution, Life Science
A Microbiologist and a Mathematician Use Game Theory to Predict More Virulent Microbes
Wednesday, October 24th, 2007 7:35 pm
Written by: Mary LeFever
Looking for another opportunity to integrate math and science? How two researchers applied game theory to explain the coevolution of microbes and humans and to predict some “pretty bad epidemics” in our biological future was the subject of a story in ScienceDaily, October 20, 2007. The original model by microbiologist Martin J. Blaser […]
Posted in Topics: Biodiversity, Evolution, Life Science, Mathematics, Science
Posted in Topics: Birds, Ecology, Evolution, Health, Life Science, Microbiology, Science
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