tobacco congress The top e-cigarette executives testified before today, just like the top cigarette executives did 26 years ago. What hasn't changed: The playbook they use to target and addict kids. More on tobacco ceos testify before congress

Celtuce, a lettuce variety grown primarily in Asia for its stems, crosses easily with lettuces grown for their leaves

Strip vapes are therefore perfect for those switching from tobacco cigarettes and offer an ideal introduction to the world of vaping, without you needing any prior knowledge or having to refill liquid yourself

Theres no hard evidence to point to exactly what the level of risk of these products are relative to cigarettes, says Dr Benjamin Chaffee, professor at the University of California, San Francisco (UCSF) School of Dentistry and the UCSF Center for Tobacco Control Research and Education

You simply take one of the tobacco flakes and then, going against the grain, you double it over