tax free cigarettes Cigarette sales at duty-free stores spike after hefty hike D.C.'s Sales And Cigarette Taxes

Nicotine is a central nervous system stimulant which is widely used throughout the world, it is dependency forming and one of the hardest drugs to stop using

"Tobacco is a very low margin business, tends to have higher theft and is labor intensive in some cases (due to local municipality regulations)," the spokesman said

The data on this is solid - quit lines work, and they roughly double the effect when combined with medication

School Threats If students write or talk about injuring or killing another student, staff member, or any other person, or about using weapons through any media, these statements will be taken as serious threats

ABC News' Sony Salzman contributed to this report.