Food Insufficiency Is Associated with High-Risk Sexual Behavior among Women in Botswana and Swazilan
Background
Both food insufficiency and HIV infection are major public health problems in sub-Saharan Africa, yet the impact of food insufficiency on HIV risk behavior has not been systematically investigated. We tested the hypothesis that food insufficiency is associated with HIV transmission behavior.
Methods and Findings
We studied the association between food insufficiency (not having enough food to eat over the previous 12 months) and inconsistent condom use, sex exchange, and other measure
Folding pathway of the B1 domain of protein G explored by a multiscale modeling
The understanding of the folding mechanisms of single domain proteins is an essential step in the understanding of protein folding in general. Recently, we developed a mesoscopic CABS protein model which was successfully applied in protein structure prediction, studies of protein thermodynamics and modeling of protein complexes. In the present research this model is employed in a detailed characterization of the folding process of a simple globular protein, the B1 domain of IgG-binding protein G
Fats to Fuel - Partners Video Magazine
A Small Business Innovation Research grant results in technology that efficiently recycles industrial fats into useful biodiesel. Fats to Fuels is a segment from Partners Video Magazine's latest episode, Fueling America. To view the entire episode visit: http://www.csrees.usda.gov/newsroom/partners/partners.html
What Do You Know About Archeology?
This OLogy activity tests kids' knowledge about excavation strategies, the tools archaeologists use, and more with an interactive quiz. The 10-question multiple-choice test covers a wide range of topics, from "Why do archaeologists create a map of the site before they dig?" to "Archaeologists look for different soil layers that they identify by color and texture. If the layers haven't been disturbed, what can they tell us?" After making their 10 selections, kids can check their answers with a pa
Discovery Collection: Marine Animals
Marine Animals is one of the AMNH Education Department's many collections of specimens and artifacts gathered the world over by explorers and scientists. In its online Discovery Collection form, Marine Animals includes an educator's Guide with suggestions for how to use the Marine Animals Discovery Collection in the classroom.
Who Are the Plants?
This online article, from Biodiversity Counts, offers a brief overview of the plant kingdom. Specifically, it covers: why plants have their own kingdom, Plantae; what separates the kingdom's two very basic categories; the plant kingdom's 10 divisions, including the number of species in each; and why some organisms that seem like plants belong instead to the kingdom Protista or the kingdom Fungi.
Plant/Arthropod Interactions
This online article, from Biodiversity Counts, offers insight into how plants interact with arthropods. It has: an explanation of the difference between detrimental and mutually beneficial relationships; some of the chemical and mechanical modifications plants have made to attract helpful arthropods and fend off harmful ones; a detailed overview of pollination, with descriptions of seven common pollination syndromes; a detailed overview of plant defense mechanisms; and a series of questions stud
Helpful Hints for Field Sketching
This online article, from Biodiversity Counts, offers insight into the task of field sketching. After discussing the difference between seeing and observing, the article offers tips designed to help make students better at observational rendering. The six hints discussed are proportions, perspective, volume, simplifying, practicing a lot, and having fun.
Kids in the Hall of Biodiversity
This biodiversity Web site for kids, part of the museum's Kids in Our Halls program, was produced by high school interns at the Museum. In includes these sections: What Do You Think About Extinction?, an interview with kids visiting the Hall of Biodiversity; Did You Know?, a collection of fun facts that includes challenges to be solved; a five-question interactive biodiversity quiz; a Q&A interview with the head of the museum's Ichthyology Department; brief articles about the origins of chocolat
You Decide: Do violent video games cause real violence in children?
This educational guide focuses on video games as a potential cause of violence in children Students are invited to examine the arguments on both sides of the debate, developing critical thinking skills as they work through the activities. Students will learn how to support their arguments with evidence and reason. It is expected that at the end of this guide students will determine where they stand on this controversial issue.
You Decide: Do Americans pay too much in federal income tax?
This educational guide focuses on federal income tax, investigating different tax systems and the fairness and efficacy of each. Students are invited to examine the arguments on both sides of the debate, developing critical thinking skills as they work through the activities. Students will learn how to support their arguments with evidence and reason. It is expected that at the end of this guide students will determine where they stand on this controversial issue.
Search tools you haven't tried
Ask.com, Vivisimo, and WiseNut offer options for finding, organizing, and displaying the websites you're looking for.
Science as a verb
Inquiry science requires active relationships between students, teachers, and science. Building these relationships is a three-step process that involves thinking about inquiry as a process of science, as a pedagogical strategy, and as a set of skills and behaviors to encourage in students.
Scannability: organizing for the web
How you organize and format your writing can go a long way toward making it readable.
Rice farming and rural life in Vietnam
Photographs and text tell the story of rice and rural life in Southeast Asia, with an emphasis on the highlanders, or Montagnards.
Cloud Protocols
The purpose of this activity is to observe the type and cover of clouds including contrails. Students observe which of ten types of clouds and how many of three types of contrails are visible and how much of the sky is covered by clouds (other than contrails) and how much is covered by contrails. Intended outcomes are that students learn how to make estimates from observations and how to categorize specific clouds following general descriptions for the categories. They will learn the meteorologi
Making a Contour Map
The purpose of this activity is to learn how contour maps can be made by hand. Students plot data from GLOBE schools on a map with latitude and longitude lines and draw contours based on the values plotted. A suggested extension and how to use this activity as an assessment is included.
Viscosity of the Mantle: Constraints from Post-glacial Rebound
In this lab, students determine the viscosity of a relatively viscous fluid by measuring the rate of rebound of a partially submerged object following a rapid decrease in its mass. This experiment is carried out in the context of an analysis of post-glacial rebound as a measurement of the viscosity of the mantle. Learning goals, context for use, teaching tips, materials, assessment tips and related resources are provided.
Vectors and slope stability
This activity is designed to teach students with little or no experience with vectors, free-body diagrams, or the like to apply vectors to slope stability problems. Students first learn the basic properties of vectors, vector addition, resolving forces, etc. They then apply these techniques to establish in a simplified way how geologists can determine if a slope is stable, how much loading a slope can withstand before it becomes unstable, and other principles of slope stability determination. Le
