Nevada needs to build $1.91 billion in new prisons in the next eight years and fund huge increases in staff and programs to keep pace with growth in the inmate population. A population that has grown double the best available projections for several years."Nevada is burning the correctional candle at both ends," Director Glen Whorton told the legislative money committees Tuesday.He said the percentage of violent offenders is increasing along with the percentage of drug offenders. He said the women's population grew at more than 18 percent last year alone. At the same time, he said, program funding from the …