1.   Most threatening of these for the Marine ecosystem is the exposure to increased ultra-violet radiation through the depletion of the ozone layer.

2.   Arctic waters show no increased radiation levels from nuclear waste dumped there over the years by Soviet authorities.

3.   Among other vegetation, coniferous and beech trees appeared most seriously affected by increased radiation.

4.   John Frederick, leader of the Chicago team, said it was not clear how the increased ultraviolet radiation had affected the population.

5.   According to Californian researchers, increased ultraviolet radiation from the ozone hole above Antarctica is scarcely having any effect on the growth of marine plankton in the ocean below.

6.   On space missions, the potential problems multiply because of increased radiation that can cause the fungi to mutate into more dangerous forms.

7.   Or could it be increased radiation from the sun?

8.   But the researchers said they doubted the unexpected finding is related to the increased radiation in the atmosphere at high altitudes.

9.   Despite having some increased radiation on its territory, it poses no immediate danger to its personnel or the nearby area, Radon chief expert Oleg Polsky said.