Violent storms barreled through several states Friday, bringing deadly tornadoes and leaving behind a path of destruction.

Detailed price information for First Helium Inc (HELI-X) from The Globe and Mail including charting and trades.

Above: A Von Karman vortex street downwind of the Canary Island chain in the eastern Atlantic Ocean off the coast of Africa on Feb. 27, 2015. Image credit: NASA Worldview. Editor's note ...