Human bone marrow has been used to create early-stage sperm cells for the first time, a scientific step forward that will help researchers understand more about how sperm cells are created.

The research published in the academic journal Reproduction: Gamete Biology, was carried out in Germany* by a team of scientists led by Professor Karim Nayernia, formerly of the University of Göttingen but now of the North-east England Stem Cell Institute (NESCI), based at the Centre for Life in Newcastle upon Tyne.

Dutch researcher Laura Brandán Briones, that's who.

She improved both the tests and the method to determine the reliability of the tests. This means, for example, that washing machines and coffee machines can be tested far better before they are launched on the market.

In a new study that will be published this year in Employee Responsibilities and Rights Journal, Dr. Debbie Knapp, Kent State assistant professor of management and information systems, examines the efficacy of the “Don’t Ask, Don’t Tell, Don’t Pursue” policy. She finds that homosexuals are no more disruptive to military life than their heterosexual counterparts.

Approximately 60,000 gays are active in the U.S. military today, according to the Center for the Study of Sexual Minorities in the Military.

Small, clever process technology is essential for the future, but is it possible? Dutch-sponsored researcher Fernando Benito López investigated the possibilities of the so-called lab-on-a-chip: microreactor chips in which chemical reactions can take place under (high) pressure. The results were very promising. The reaction rate increased compared to conventional equipment, the measurements were accurate and safety was not a problem. Moreover it was possible to follow and regulate the reaction during the process.

Environmental injustice in people-of-color communities is as much or more prevalent today than 20 years ago, say researchers commissioned to conduct a follow-up to the 1987 landmark study, "Toxic Wastes and Race in the United States."

The new report, "Toxic Wastes and Race at Twenty, 1987-2007: Grassroots Struggles to Dismantle Environmental Racism in the United States," shows that 20 years later disproportionately large numbers of people of color still live in hazardous waste host communities, and that they are not equally protected by environmental laws.

Immune cells that are the body’s front-line defense don’t necessarily rest quietly until invading bacteria lock onto receptors on their outside skins and rouse them to action, as previously thought. In a new paper, University of Michigan scientists describe their findings that bacteria can barge inside these guard cells and independently initiate a powerful immune response.