Notebook

Physics

Snow Crystals

This Web site, created by Caltech physicist Kenneth G. Libbrecht, is all about snow crystals and snowflakes. With many beautiful images, it provides a guide to snowflakes, information on growing snowflakes, an introduction to the physics of snowflake formation, and ideas for snow and ice activities. Go to: http://www.snowcrystals.com/

Health & Medicine

Bone Health

The Web site of the International Osteoporosis Foundation offers information for health professionals and the public about osteoporosis, a disease that reduces the density and quality of a person’s bones. It includes a 1-minute osteoporosis risk test, patient stories, facts and statistics on the disease, articles, and more. Go to: http://www.iofbonehealth.org/

Humans

From the November 14, 1936, issue

Counting dust particles, fighting viral diseases, and aging whiskey.

Humans

From the November 7, 1936, issue

A tree's age, testing flu vaccine, and the polar ozone layer.

Humans

Protecting Consumers

The Federal Trade Commission has launched a blog associated with its public hearings on “Protecting Consumers in the Next Tech-ade,” held Nov. 6-8, 2006. The hearings examined how evolving technology will shape and change the habits, opportunities, and challenges of consumers and businesses in the coming decade. It featured experts from the business, government, and […]

Humans

From the October 31, 1936, issue

Ancient Egyptian tombstones, political party preferences, and a new record for starvation.

Humans

Thinking Math and Science

This site describes itself as the online community for academically talented youth. Developed by the Johns Hopkins University Center for Talented Youth, it provides timely news articles about scientific advances, profiles of researchers, information on summer programs and academic competitions, book reviews, and even a humor section, with items gathered from a wide variety of […]

Humans

From the October 24, 1936, issue

A sugarcane jungle, stopping cancer growth with diet, and an insect-killing fungus.

Earth

Encyclopedia of Earth

The Encyclopedia of Earth is an online source of environmental information that features objective, authoritative articles written and reviewed by an international community of experts. Topics range from absorption of toxicants and biodiversity to wind farms and zero-point energy. Entries often include images and references. Go to: http://www.eoearth.org/

Humans

From the October 17, 1936, issue

A million volts to fight cancer, relief from migraines, and differing sensitivity to sound.

Humans

Insect Close-Ups

Psychology professor David Yager of the University of Maryland has focused his research on the evolution of hearing. In the course of this work, he has produced extraordinary, close-up portraits of a variety of insects. His image of a Cuban cockroach recently won second place for photography in the National Science Foundation’s annual Science and […]

Humans

From the October 10, 1936, issue

The inner beauty of leaves, a better treatment for pneumonia, and alcohol fuel for cars.