Global changes, such as climate warming and stratospheric ozone depletion, are increasingly noticeable. Therefore, there is a need for scientists to have reliable information about atmospheric and stratospheric processes .

Atlantic Bluefin Tuna is a much sought after delicacy. Due to huge fishing pressure, tuna stocks have decreased dramatically . There are now signs of recovery, according to the International Commission for the Conservation of Atlantic Tunas .

People living in Arctic areas can be more sensitive to pollutants due to their genetics , says researcher Arja Rautio at the Centre for Arctic Medicine in the University of Oulu , Finland.

The filter could be used to recycle sewage on a space station, but the main focus is the use of ultra pure water in the fabrication of semiconductors.