Ammonia causes the disgusting smell of urine in liquid manure from pigs and cattle. Scientists are not far from finding a way of stopping the formation of ammonia, although, this will not entirely remove the smell.
The herpes virus has long been thought to cause sea turtles to develop fatal tumours. Although the number of the world’s sea turtles developing tumours has been decreasing since the 90s, a new study shows this doesn’t mean that turtles are rid of herpes.
When special cells known as fibroblasts are active, cancer can spread throughout the body. Scientists are trying to find out how they can deactivate the fibroblast cells. In the long term, the studies may lead to treatments for otherwise incurable cancer.
A new Danish study indicates that gene variations, which are associated with low levels of vitamin D in the blood, can lead to premature death. It is not yet known whether dietary supplements can counteract this effect.