Pygmy elephant with radio collar. The Borneo pygmy elephant may not be native to the island of Borneo after all. Instead, the population could be the last survivors of the Javan elephant race – accidentally saved from extinction by the Sultan of Sulu centuries ago, suggests an article co-authored by World Wildlife Fund (WWF).

Nearly 20 percent of military service members who have returned from Iraq and Afghanistan -- 300,000 in all -- report symptoms of post traumatic stress disorder or major depression, yet only slight more than half have sought treatment, according to a new RAND Corporation study.

Tigers held in captivity around the world—including those in zoos, circuses, and private homes—may hold considerable conservation value for the rapidly dwindling wild populations around the world, according to a new report published online on April 17th in Current Biology, a Cell Press publication. Using a new method for assessing the genetic ancestry of tigers, researchers discovered that many apparently "generic" tigers actually represent purebred subspecies and harbor genomic diversity no longer found in nature.

Fully mature, differentiated B cells can be reprogrammed to an embryonic-stem-cell-like state, without the use of an egg according to a study published in the April 18 issue of Cell.

Soldiers on sentry duty in hostile territory keep in regular radio contact with their colleagues to assure them that all is well and that they are safe to carry on their manoeuvres. New research funded by the Biotechnology and Biological Sciences Research Council (BBSRC) and published in Current Biology today (17 April) reveals that this is also a feature of the bird world and is very likely to be a rare example of truly cooperative behaviour.

Until recently, the chemical marks littering the DNA inside our cells like trees dotting a landscape could only be studied one gene at a time. But new high-throughput DNA sequencing technology has enabled researchers at the Salk Institute for Biological Studies to map the precise position of these individual DNA modifications throughout the genome of the plant Arabidopsis thaliana, and chart its effect on the activity of any of Arabidopsis’ roughly 26,000 genes.

Researchers are closing in on a completed diagram of how human cells protect themselves against constant genetic mistakes that contribute to most diseases, according to a study to be published in the April 18 edition of the journal Cell.

A gene mutation responsible for the most common form of inherited colon cancer is older and more common than formerly believed, according to a recent study.

Researchers at Yale School of Medicine have identified, characterized and cloned ovarian cancer stem cells and have shown that these stem cells may be the source of ovarian cancer’s recurrence and its resistance to chemotherapy.

Duke University researchers have made a major advance in understanding how bacteria divide. This could lead to new antibiotic treatments that prevent dangerous bacteria from multiplying.