Uncategorized

Humans

Letters from the May 22, 2004, issue of Science News

Further options “Surgical Option: Hysterectomy may top drugs for women with heavy bleeding” (SN: 3/27/04, p. 196: Surgical Option: Hysterectomy may top drugs for women with heavy bleeding) doesn’t mention that 13 to 20 percent of women with heavy menstrual periods have a common but often undiagnosed bleeding disorder called von Willebrand disease. Because this […]

Paleontology

Rare English bits are oldest known charcoal

Analyses of small black chunks of material extracted from 420-million-year-old rocks found along the England-Wales border suggest that they're remnants of the earliest known wildfire.

Archaeology

Guatemalan sites yield Maya insights

Excavations at three archaeological sites in Guatemala have provided new insights into both the early and late stages of ancient Maya civilization.

Astronomy

Before the big one hits

The next time you hear about an asteroid or comet about to hit Earth, you can go to a new Internet site to find out where the collision will be and how much damage will occur.

Health & Medicine

Herbal erection pills may be spiked

Some pills marketed as herbal remedies for erectile dysfunction contain drugs that should be available only by prescription.

Earth

Filtered air cuts down mutations

Microscopic particles in the air may mutate the DNA of sperm.

Astronomy

Windy endeavor

In early April, an Earth-orbiting satellite closed its doors after more than 2 years of collecting ions from the solar wind.

Astronomy

Dark Doings

A slew of new and proposed experiments, ranging from the cosmic to the subatomic scale, may shed light on why the expansion of the universe is speeding up.

Anthropology

Humanity’s Strange Face

New fossil finds in a Romanian cave fuel controversy over whether different, closely related species interbred on the evolutionary path that led to people.

Math

Extra Time, Math, and the SAT

Extra time on the math portion of the SAT helps the most able students the most.