K2

Those who smoke the synthetic marijuana, also known as spice, are coming down with a condition that impairs their blood's ability to clot.

Florida prisons are seeing an increasing number of inmate deaths that authorities blame on a synthetic marijuana substance known as K2, or spice. The...

Outlawing more than a dozen cannabinoids — chemicals concocted in labs and sprayed on leaves to create this risky street drug — hasn't stopped the problem. Chemists just make new versions.

It appears that state and federal laws criminalizing the sale of “bath salts” -- while not perfect -- are working. The number of overdoses on the…