WOODBURY - Some lawmakers are pushing for a ban on synthetic marijuana, a substance that mimics the effects of pot but is currently legal in most states, including New York. Experts say the substance, known as K2 or Spice, is becoming popular among high school and college students. For about $20, people can buy it from smoke shops under the guise of potpourri and easily get high. Drug experts say synthetic marijuana is very dangerous. They say it can lead to panic attacks, anxiety, depression and even convulsions and heart attacks. Sen. Charles Schumer (D-N.Y.) is calling on the U.S. Senate to pass legislation that would make synthetic marijuana illegal. The legislation has already passed the House.To watch a news conference about synthetic marijuana, go to channel 612 on your iO digital cable box and select the 'iO Extra' tab.