Resumen de Updates.

David Biello, Larry Greenemeier

• The article presents scientific news briefs. The hole in the ozone layer above Antarctica is slowly repairing but may result in increases in air temperatures due to the absorption of ultraviolet light. The drug called Protectan helps combat damage caused by radiation, and may be of use in cancer radiation treatment. Physicists in Princeton University demonstrated the quantum Hall effect without the application of magnetic fields through the use of bismuth crystals.