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Animals

Pesticides Mess with Immunity: Double whammy promotes frog deformities

Agricultural pollutants may conspire with parasites to cause the epidemic of limb deformity that's sweeping through North America's frog populations.

Anthropology

Evolution’s Surprise: Fossil find uproots our early ancestors

Researchers announced the discovery of a nearly complete fossil skull, along with jaw fragments and isolated teeth, from the earliest known member of the human evolutionary family, which lived in central Africa between 7 million and 6 million years ago.

Astronomy

Let There Be Spin

X-ray outbursts from two different pairs of stars in our Milky Way are providing clues about how the most rapidly rotating stars in the universe got their spin.

Planetary Science

Pristine fragments of asteroid breakup

Planetary scientists have for the first time precisely dated a collision that smashed an asteroid into fragments.

Paleontology

Fossil leaves yield extinction clues

Analyses of fossil leaves provide more evidence that the mass extinctions that wiped out the dinosaurs 65 million years ago were sudden and probably brought about by an extraterrestrial impact.

Health & Medicine

Dynamite discovery on nitroglycerin

Scientists have found a long-sought enzyme that may be behind nitroglycerin's dilation of blood vessels.

Health & Medicine

Ginseng extract halts diabetes in mice

Extracts from the berry of the American ginseng plant counter obesity and insulin resistance in mice.

Earth

Tomato compound repels mosquitos

New insect repellents based on a compound that contributes to the smell of crushed tomato leaves are under development.

Materials Science

Molecular template makes nanoscale helix

Using ribbons made of organic molecules as minuscule templates, researchers have coaxed a semiconductor material into tiny helical coils.

Health & Medicine

Watermelon red means lycopene rich

Watermelon is a far better source of the carotenoid lycopene than tomatoes are and at least as well absorbed by the body.

Humans

From the July 9, 1932, issue

MODERNISTIC BUILDING SHOWS ACHIEVEMENTS OF SCIENCE Strikingly modernistic in design and construction is the huge Hall of Science building in Chicago which has been dedicated as the key structure for the Century of Progress Exposition next year. Its two floors and mezzanine, containing 9 acres of exhibit space, will illustrate the development of the sciences […]

Humans

Building America

The “Building America” online exhibition by the National Building Museum provides a vividly illustrated overview of U.S. achievements in architecture, engineering, construction, planning, design, and landscaping. Timelines chronicle the evolution of buildings, from houses to skyscrapers, and environments, from historic New England towns to contemporary suburbs. Essays delve into the forces that affected U.S. architecture […]