They found the voltage generated when the liposomes were exposed to light was high enough to make a nerve cell fire.

BBC: NEWS | Health | Spinach may hold blindness cure

Does it make sense to ban the old light bulb in a world where we are encouraged to store Terrabytes of pointless photographs forever on fire-hot Web-servers forever spinning in a Google server farm?

FORBES: The Light Bulb Moment: Lights Out In America?