A symbol of a studious individual hard at work, the humble neon highlighter pen is nevertheless often akin to an un-surreptitious sword; brightly coloured and clumsily wielded by many, often ...

An curved arrow pointing right. Watch full episodes of the Science Channel series "How It's Made" on the Science GO app or at: http://insder.co/HowItsMade More from ...

Choose from Fluorescent Pen stock illustrations from iStock. Find high-quality royalty-free vector images that you won't find anywhere else. Video Back Videos home Signature collection Essentials ...