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Tech

A Shot in the Light

Bullet replicas that look on a microscopic level like they've been fired from a gun—even though they haven't—enable forensics specialists to fine-tune as never before instruments to automatically match bullets from crime scenes.

Humans

From the June 14, 1930, issue

WELLAND CANAL Slightly more than a century after the falls and rapids of Niagara were first overcome for water transportation by a canal only 8 feet deep, there has been completed on practically the same site a mammoth structure that will pass giant 600-foot lake grain vessels up and down the 326.5-foot difference in elevation […]

Health & Medicine

Snow and Cholera

Most people have heard of cholera, but few know anything about John Snow, the British doctor who determined how the disease is spread. Epidemiologist Ralph R. Frerichs of the University of California, Los Angeles School of Public Health has created a Web site devoted to Snow’s life and accomplishments, including such items as the full […]

Humans

From the January 7, 1933, issue

ATOM BUILDING KEEPS STARS SHINING, SAYS A.A.A.S. HEAD The building up of other heavier atoms out of hydrogen stokes the internal heat of the stars, including the sun, Prof. Henry Norris Russell, Princeton University astronomer recently elected president of the American Association for the Advancement of Science, suggested in the Maiben lecture before the Association. […]

Health & Medicine

Health on the Net

Assembled by the Health on the Net Foundation in Switzerland, this Web site posts an array of advice on health problems, offers lists of scientific meetings, and reports results from new biomedical studies. Particularly useful is its library of biomedical terms, which includes an allergy glossary designed to help people decipher the immune system. To […]

Health & Medicine

Double cord-blood transplant helps cancer patients

Two umbilical-cord-blood transplants may work better than one for cancer patients.

Math

Sound-Byte Math Music

Humans

From the December 31, 1932, issue

SIX COLORS MIX IN WATER AT BASE OF CAPITOL One of the most spectacular fountain lighting systems places the Capitol at Washington in a new setting, when the building is viewed from the direction of the Union Station. Engineers describe the recently installed system as a fixed color installation. Water in the fountain and terrace […]

Earth

Hawaii’s Hated Frogs

Wildlife officials in Hawaii are investigating unconventional pesticides to eradicate invasive frogs—or at least to check their advance.

Health & Medicine

Clear Skin: Injections counteract psoriasis in patients

Injections of an immune system protein called interleukin-4 can alleviate skin problems in people with psoriasis.