A wildlife scientist has examined how different human behaviors influence disease transmission between domestic dogs and the African wild dog, an endangered species.

Researchers have found the first solid evidence of horizontal DNA transfer, the movement of genetic material among non-mating species, between parasitic invertebrates and some of their vertebrate hosts.

The high speeds of today's roller coasters bring a lot of thrills, but if you're not careful, the ride could also cause damage to your ears, say physicians. Their case study offers the first reported link between the force of acceleration in roller coasters and a common ear injury that can cause temporary hearing loss and ear pain.

Practicing non-pharmaceutical interventions such as hand-washing and mouth covering may help limit the transmission of the pandemic flu, but more research on these measures is critical, according to a new study.

Cancer cells producing toxins that destroy tumours – could this be a future treatment for cancer? Researchers in Sweden have achieved good results in tests on both cells and animals.

More than 1,200 tornadoes rip through the U.S. Midwest in an average year, killing about 100 people and costing millions of dollars in damage. Currently the longest warning time meteorologists can give is a nerve-racking 13 minutes, with a 70 percent false alarm rate. [More]

Scientists have discovered two "body clock" genes that reveal how seasonal changes in hormones are controlled and could ultimately help find treatments for seasonal affective disorder. Researchers also found that one of these genes has a similar role in both birds and mammals, showing a common link that has been conserved for more than 300 million years.

Scientists have discovered two "body clock" genes that reveal how seasonal changes in hormones are controlled and could ultimately help find treatments for seasonal affective disorder. Researchers also found that one of these genes has a similar role in both birds and mammals, showing a common link that has been conserved for more than 300 million years.

New research shows that microRNA can silence genes that protect against cancer-causing mutations. The study found that microRNA-155 can inhibit the activity of mismatch repair genes, which normally correct damage that occurs when the wrong bases are paired in DNA. Loss of these genes causes cancer-susceptibility syndromes and can contribute to colorectal, uterine, ovarian, and other cancers. It is the first evidence that deregulation of microRNAs can cause genomic instability, a characteristic of cancer cells.

New research shows that microRNA can silence genes that protect against cancer-causing mutations. The study found that microRNA-155 can inhibit the activity of mismatch repair genes, which normally correct damage that occurs when the wrong bases are paired in DNA. Loss of these genes causes cancer-susceptibility syndromes and can contribute to colorectal, uterine, ovarian, and other cancers. It is the first evidence that deregulation of microRNAs can cause genomic instability, a characteristic of cancer cells.