http://www.nytimes.com/2009/03/31/science/earth/31conv.html?ref=science
By CLAUDIA DREIFUS
Published: March 30, 2009
In the early 1980s, a Japanese company went to the Argentine government and said, “We’d like a concession to harvest your penguins and turn them into oil, protein and gloves.” There was a public outcry. This was during a military dictatorship when dissidents were being thrown into the ocean from airplanes. And yet people said, “We object to having our penguins harvested.”
Tuesday, March 31, 2009
Saturday, March 28, 2009
HOW DOES EVOLUTION WORK?
1. By the means of what process does evolution occur?
2. What was Darwin’s fundamental question?
3. What four profecies are included in Natural Selection?
4. Are all individuals from the same species the same?
5. For evolution to occur, what has to happen to the adapted characteristics?
6. What did Darwin refer to when talking about struggle for existance?
7. What book did Darwin write?
8. What is the main important force in evolution?
PROTEIN SYNTHESIS
1. What's the name of the enzyme that unwinds DNA?
2. What is the name of the enzyme that adds RNA nucleotides to the complimentary DNA strand?
3. How many DNA strands are used to synthesize mRNA?
4. Where is mRNA synthesized?
5. Where are proteins synthesized?
6. How are the amino acids held together in the primary structure of a protein?
Tuesday, March 24, 2009
From Arctic Soil, Fossils of a Goliath That Ruled the Jurassic Seas
http://query.nytimes.com/search/sitesearch?query=fossils+from+arctic+soil&x=0&y=0&type=nyt
By JOHN NOBLE WILFORD
Published: March 16, 2009
There were monstrous reptiles in the deep, back in the time of dinosaurs.They swam with mighty flippers, two fore and two hind, all four accelerating on attack. In their elongated heads were bone-crushing jaws more powerful than a Tyrannosaurus rex’s. They were the pliosaurs, heavyweight predators at the top of the food chain in ancient seas.
By JOHN NOBLE WILFORD
Published: March 16, 2009
There were monstrous reptiles in the deep, back in the time of dinosaurs.They swam with mighty flippers, two fore and two hind, all four accelerating on attack. In their elongated heads were bone-crushing jaws more powerful than a Tyrannosaurus rex’s. They were the pliosaurs, heavyweight predators at the top of the food chain in ancient seas.
The Fight Plan for Clean Air
http://www.nytimes.com/2009/03/24/science/earth/24epa.html?scp=1&sq=clean%20air&st=cse
KATE GALBRAITH and FELICITY BARRINGER
Published: March 23, 2009
The Environmental Protection Agency, about to declare heat-trapping gases to be dangerous pollutants, has embarked on one of the most ambitious regulatory challenges in history.
KATE GALBRAITH and FELICITY BARRINGER
Published: March 23, 2009
The Environmental Protection Agency, about to declare heat-trapping gases to be dangerous pollutants, has embarked on one of the most ambitious regulatory challenges in history.
Wednesday, March 4, 2009
A Baby, Please. Blond, Freckles -- Hold the Colic
http://online.wsj.com/article/SB123439771603075099.html
By GAUTAM NAIK
FEBRUARY 12, 2009
Want a daughter with blond hair, green eyes and pale skin?
A Los Angeles clinic says it will soon help couples select both gender and physical traits in a baby when they undergo a form of fertility treatment. The clinic, Fertility Institutes, says it has received "half a dozen" requests for the service, which is based on a procedure called pre-implantation genetic diagnosis, or PGD.
By GAUTAM NAIK
FEBRUARY 12, 2009
Want a daughter with blond hair, green eyes and pale skin?
A Los Angeles clinic says it will soon help couples select both gender and physical traits in a baby when they undergo a form of fertility treatment. The clinic, Fertility Institutes, says it has received "half a dozen" requests for the service, which is based on a procedure called pre-implantation genetic diagnosis, or PGD.
Bacteria Run Wild, Defying Antibiotics
http://query.nytimes.com/gst/fullpage.html?res=9B00E7DD173FF931A35750C0A9629C8B63
By ABIGAIL ZUGER
Published: Tuesday, March 2, 2004
A new chapter in the continuing story of antibiotic resistance is being written in doctors' offices across the country, as a group of common bacteria rapidly becomes resistant to the antibiotics that have been used to treat them for decades.
By ABIGAIL ZUGER
Published: Tuesday, March 2, 2004
A new chapter in the continuing story of antibiotic resistance is being written in doctors' offices across the country, as a group of common bacteria rapidly becomes resistant to the antibiotics that have been used to treat them for decades.
Tuesday, March 3, 2009
Monday, March 2, 2009
Battling Bacterial Evolution: The work of Carl Bergstrom
http://evolution.berkeley.edu/evolibrary/article/_0_0/bergstrom_01
Author: Anna Thanukos, based upon interviews with Carl Bergstrom, University of Washington
Dr. Carl Bergstrom manages evolution. From his laboratory at the University of Washington, Carl figures out how to control the evolutionary future of microbe populations, nudging them towards particular destinies and away from others. His laboratory does not look like a traditional biology lab; rather than test tubes or microscopes or petri dishes, the rooms are full of computers, whiteboards, books, and coffee machines. But then again, Carl is not trying to evolve smarter dogs or to resurrect T. rex. Instead, he has his eye on a far more practical goal: to control how bacteria in hospitals evolve resistance to our drugs. His tools in this endeavor are computers, mathematics, and evolutionary theory, and the testing grounds for his ideas are hospital intensive care units.
Author: Anna Thanukos, based upon interviews with Carl Bergstrom, University of Washington
Dr. Carl Bergstrom manages evolution. From his laboratory at the University of Washington, Carl figures out how to control the evolutionary future of microbe populations, nudging them towards particular destinies and away from others. His laboratory does not look like a traditional biology lab; rather than test tubes or microscopes or petri dishes, the rooms are full of computers, whiteboards, books, and coffee machines. But then again, Carl is not trying to evolve smarter dogs or to resurrect T. rex. Instead, he has his eye on a far more practical goal: to control how bacteria in hospitals evolve resistance to our drugs. His tools in this endeavor are computers, mathematics, and evolutionary theory, and the testing grounds for his ideas are hospital intensive care units.
Babies Know: A Little Dirt Is Good for You
From One Genome, Many Types of Cells. But How?
http://www.nytimes.com/2009/02/24/science/24chromatin.html
One of the enduring mysteries of biology is that a variety of specialized cells collaborate in building a body, yet all have an identical genome. Somehow each of the 200 different kinds of cells in the human body — in the brain, liver, bone, heart and many other structures — must be reading off a different set of the hereditary instructions written into the DNA.
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