Sandwalk
Strolling with a skeptical biochemist
Tuesday, June 12, 2007
How Penicillin Works to Kill Bacteria
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Bacterial cell walls are made of peptidoglycan [ Bacteria Have Cell Walls ]. In order to form a rigid structure, the polysaccharide chains...
15 comments:
Bacteria Have Cell Walls
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Most species of bacteria have a cell wall. The rigid cell wall prevents the bacterial cell from expanding in solutions where the salt conc...
7 comments:
Monday, June 11, 2007
Does Politics Influence When Scientific Papers Are Published?
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I'm told that the American House of Representatives is considering a bill that will allow embryonic stem cell research. Matt Nisbet th...
14 comments:
Monday's Molecule #30
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Today's molecule looks complicated but it has a very simple, and well-known, name. We need the correct common name and the long syste...
5 comments:
Sunday, June 10, 2007
Was Bertrand Russell an Atheist or an Agnostic?
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John Wilkins has posted an article on whether Bertrand Russell was an agnostic or an atheist [ What is an Agnostic? by Bertrand Russell ]. ...
40 comments:
Saturday, June 09, 2007
The Ethics of Stem Cell Research
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Arthur Caplan is the director of the Center for Bioethics at the University of Pennsylvania. He was written an article on the MSNBC websit...
10 comments:
Friday, June 08, 2007
Still Banned From Uncommon Descent
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Poor old DaveScott. Like GilDodgen he's very confused about the evolution of topoisomerases [ A Dynamic Fitness Landscape ]. He posted...
13 comments:
Reprogramming Somatic Cells
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There were three papers published this week that showed how to reprogram somatic cells so they could act like embryonic stem cells (Mahera...
8 comments:
USA TODAY/Gallup Poll on Evolution
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Check out the USA Today website for information on the latest poll [ USA TODAY/Gallup Poll results ]. Let's look at the result of two ...
12 comments:
I Knew It: There Can Be More than One Solution to a Sudoku Puzzle!
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A recent article by Agnes M. Herzberg and M. Ram Murty in the Notices of the American Mathematical Society confirms what many of us have k...
21 comments:
A Warning to Our American Guests
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Canadian Cynic has just alerted me to a problem that could get my American friends in big trouble when they come for my daughter's wed...
9 comments:
Thursday, June 07, 2007
Atheist Books Are Bestsellers
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Publishers Weekly has an article on books about atheism [ Believe It or Not ]. They report on the number of copies of these books that hav...
12 comments:
Charles Darwin Was a Gradualist
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Punctuated Equilibria refer to patterns of evolution characterized by long periods of stasis interrupted by shorter periods of evolutiona...
17 comments:
Natural Foods Contain Lots of "Carcinogens"
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Bruce Ames was a Professor in the Department of Biochemistry & Molecular Biology at the University of California, Berkeley (USA). Thi...
6 comments:
Did Rachel Carson Get It Right?
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Rachel Carson is widely credited with kick starting the environmentalist movement following publication of Silent Spring back in 1962. S...
17 comments:
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