19 NOV 2015 by ideonexus
Reza Aslan's Eloquent Dismissal of Generalizations
REZA ASLAN, UNIVERSITY OF CALIFORNIA, RIVERSIDE: Well, I like Bill Maher. I have been on his show a bunch of times. He's a comedian.
But, you know, frankly, when it comes to the topic of religion, he's not very sophisticated in the way that he thinks. I mean, the argument about the female genital mutilation being an Islamic problem is a perfect example of that. It's not an Islamic problem. It's an African problem.
(CROSSTALK)
CAMEROTA: Well, wait, wait, wait.
(CROSSTALK)
CAMEROTA: Hol... 1 
notes
notes07 MAR 2015 by ideonexus
Using City Sewage to Survey a City's Microbiome
The team gathered samples over the course of a year from sewage treatment plants in 71 different cities in 31 states, chosen for their geographic spread and range of obesity rates. The leanest city sampled was Steamboat Springs, Colorado, with an obesity rate of 13.5 percent, while the heaviest was St. Joseph, Missouri, with a rate of 37.4 percent.
Bacteria from human waste make up just a small proportion of the bacteria found in sewage. But using DNA sequencing, the researchers could identi...Folksonomies: bacteria public health
Folksonomies: bacteria public health
1 notes
notes24 JUL 2013 by ideonexus
Potentially 90 Percent of Crime Rate Changes Explained by...
IN 1994, RICK NEVIN WAS A CONSULTANT working for the US Department of Housing and Urban Development on the costs and benefits of removing lead paint from old houses. This has been a topic of intense study because of the growing body of research linking lead exposure in small children with a whole raft of complications later in life, including lower IQ, hyperactivity, behavioral problems, and learning disabilities.
But as Nevin was working on that assignment, his client suggested they might b...
1 23 years after lead was removed from gasoline, crime rates went up and down dramatically.
13 APR 2013 by ideonexus
Bayes' Theorem Means Scientific Consensus Should Converge
One property of Bayes’s theorem, in fact, is that our beliefs should converge toward one another—and toward the truth—as we are presented with more evidence over time. In figure 8-8, I’ve worked out an example wherein three investors are trying to determine whether they are in a bull market or a bear market. They start out with very different beliefs about this—one of them is optimistic, and believes there’s a 90 percent chance of a bull market from the outset, while another one i... 1 notes
notesAs more and more tests are carried out, scientific opinions should converge around the truth.
21 SEP 2011 by ideonexus
Evolution of Lactose Tolerance
One case involves our ability to digest lactose, a sugar found in milk.
An enzyme called lactase breaks down this sugar into the more easily
absorbed sugars glucose and galactose. We are born with the ability to
digest milk, of course, for that’s always been the main food of infants.
But after we’re weaned, we gradually stop producing lactase. Eventually,
many of us entirely lose our ability to digest lactose, becoming “lactose
intolerant” and prone to diarrhea, bloating, and cramps a... 1 notes
notesSome groups of humans evolved the ability to digest milk beyond infancy as their societies domesticated cows.
21 SEP 2011 by ideonexus
There Are Human Races
In response to these distasteful episodes of racism, some scientists
have overreacted, arguing that human races have no biological reality
and are merely sociopolitical “constructs” that don’t merit scientific
study. But to biologists, race—so long as it doesn’t apply to humans!—
has always been a perfectly respectable term. Races (also called “subspecies”
or “ecotypes”) are simply populations of a species that are both
geographically separated and differ genetically in on... 1 notes
notesIt is wrong to pretend they do not exist, but we should remember that the differences between human races are minor compared to the genetic differences between individuals within a race.
20 SEP 2011 by ideonexus
Mating Strategies of Males and Females
A vivid demonstration of this difference can be seen by looking up the
record number of children sired by a human female versus a male. If you
were to guess the maximum number of children that a woman could
produce in a lifetime, you’d probably say around fifteen. Guess again.
The Guinness Book of World Records gives the “official” record number
of children for a woman as sixty-nine, produced by an eighteenth century
Russian peasant. In twenty-seven pregnancies between 1725 and
1745, sh... 1 notes
notesA Great summary of the differences between them evolutionarily.
27 JUL 2011 by ideonexus
The Development of the Human Brain
Two types of cells are important here. The first type, glial cells, make up 90 percent of the brain cells inside your child’s head. They give the brain its structure and help the neurons correctly process information. It’s a good name; glial is a Greek word for glue. The second type of cell is the familiar neuron. Though they do a lot of your child’s thinking, neurons make up only about 10 percent of the total number of brain cells. That’s probably where we get the myth that you us... 1 notes
notesA fascinating description of a process that begins before birth and continues into our 20s.
21 MAY 2011 by ideonexus
The Change in Environment for a Baby Post-Birth
Imagine for a while the nature of the changes in his world that occurred at birth. From 98.6-degree warmth to 70-degree room temperature. From total darkness to glaring overhead lights in the hospital. From relative quiet, where instead of mother's familiar voice and the soothing rhythmical sounds of her body (her heartbeat, breath sounds. etc.) there are sudden loud, unfamiliar, startling noises. From being carried constantly with the rocking motion from Mother's hip movements, to the utter ...Folksonomies: pregnancy childbirth
Folksonomies: pregnancy childbirth
...and changes for the mother as well.
