Kim appeared to suggest that it was Bolton.

The chemical can be a byproduct in other chemical manufacturing.countries around the world in 1987 agreed to phase out several types of ozone-depleting chemicals called chlorofluorocarbons (CFCs).

but scientists say what theyre seeing is much more than that.a research chemist at the National Oceanic and Atmospheric Administration.said study lead author Stephen Montzka.

degreasing stains and for refrigeration.Its the most surprising and unexpected observation Ive made in my 27 years of measurements.

according to a study in Wednesdays journal Nature.

WASHINGTON -- Something strange is happening with a now-banned chemical that eats away at Earths protective ozone layer: Scientists say theres more of it -- not less -- going into the atmosphere and they dont know where its coming from.39 out of 42 patients who got the therapy did not need a red blood cell transfusion for at least a year afterwards.

extremely arduous procedures that come with very unpleasant side effects.have been the only long-lasting treatment.

in a move that could offer relief to thousands of people with the crippling disease in the U.Gene therapy treatments can cost millions of dollars and experts have previously raised concerns that they could remain out of reach for the people who would benefit most.