People with glioblastoma, an aggressive form of brain cancer, survive for only fifteen months on average after diagnosis. But now there may be hope for those battling this deadly disease. Researchers at Duke University say they have a new vaccine that can curb the growth of this cancer and extend lives.  In clinical trials, the vaccine has shown positive results in fighting the tumors, raising hopes for patients and scientists. VOA’s Vidushi Sinha has more.