One third of the world's people are infected with tuberculosis, and someone new is infected every second. TB is notoriously hard to treat, requiring a course of multiple antibiotics over six to nine months. Many people don't complete the full course of treatment, which leads to increasing antibiotic resistance against the disease.

If you think dinosaurs are hot today, just think back to about 110 million years ago when they really ran hot and heavy.

A cancer cell breaks away from a primary tumor and settles in a new location, where it once again divides. Pharmaceutical companies typically use simplistic two-dimensional assays for this process, which is known as metastasis, to evaluate anti-cancer therapeutics. In these assays, cells crawl across the surface of a matrix, traveling in a single plane. But a new study indicates that this approach misses some crucial phenomena.

Scientists have demonstrated for the first time that embryonic stem (ES) cells cultured in the laboratory can produce sperm with the capacity to produce viable offspring. The research, published in the July issue of Developmental Cell, opens many exciting avenues for future studies, including investigation of mechanisms involved in sperm production and development of new treatment strategies for infertility.

Using unusually rigorous scientific conditions and measures, Johns Hopkins researchers have shown that the active agent in "sacred mushrooms" can induce mystical/spiritual experiences descriptively identical to spontaneous ones people have reported for centuries.

Imagine break-room vending machines featuring fruit juice and vegetables instead of cookies and soda pop. Consider colleagues who insist on mid-morning group exercise breaks and applaud a lunchtime workout rather than criticizing the cut of the sweat suit. Ponder an organizational culture that encourages walking the stairs instead of riding the elevator.

By sampling sea life in a heavily fished region off the coast of Namibia, researchers have found that jellyfish have actually overtaken fish in terms of the biomass they contribute to this ocean region. The findings represent a careful quantitative analysis of what's been called a "jellyfish explosion" after intense fishing in the area in the last few decades. The findings are reported by Andrew Brierley, of the University of St. Andrews, and his colleagues in the July 12th issue of the journal Current Biology.