Culture

Scientists working in the desert badlands of northwestern Kenya have found stone tools dating back 3.3 million years, long before the advent of modern humans, and by far the oldest such artifacts yet discovered. The tools, whose makers may or may not have been some sort of human ancestor, push the known date of such tools back by 700,000 years; they also may challenge the notion that our own most direct ancestors were the first to bang two rocks together to create a new technology.

Most people associate osteoporosis with women. But the truth is, one in four men over the age of 50 will break a bone as a result of this condition. That's more men than will have prostate cancer, according to the National Osteoporosis Foundation.

Now a leading researcher at National Jewish Health is calling for men to be included in the screening guidelines for osteoporosis. Elizabeth Regan, MD, PhD, a researcher at National Jewish Health, studied more than 3,000 smokers and former smokers ages 45 to 80 and tested their bone density. What she found was surprising.

Playing natural sounds such as flowing water in offices could boosts worker moods and improve cognitive abilities in addition to providing speech privacy, according to a new study from researchers at Rensselaer Polytechnic Institute. They will present the results of their experiment at the 169th Meeting of the Acoustical Society of America, held May 18-22, 2015 in Pittsburgh.

Many of those who should get it, don't. And many of those who shouldn't, do. That's the story of a common screening test for osteoporosis, according to new research.

A University of Colorado Cancer Center study published in the journal Nicotine & Tobacco Research shows a new dimension to the marginalization of smokers: people who smoke are less likely to vote than their non-smoking peers.

There is a striking and statistically significant difference in how women and men are treated following a heart attack. These gender differences are reflected in the rate of risk factor control, which was lower in women, and in the rate of hospital readmission for a further heart attack, which was higher in women than in men.

Thousands of American health care providers are unprepared to provide quality end-of-life care to their patients, write the editors of Scientific American in this month’s Science Agenda column. The editors argue that every medical student should be more extensively trained—and evaluated on—the skills needed to help patients navigate life’s final stages.