including basic medical and climate change research. After all, no stamp–even one with thermochromic ink and a clever design–can save the country’s brand if it continues to devalue science.

Researchers say we don’t put on enough sunscreen. A Seattle startup has come up with a potential fix: an invisible ink stamp that notifies you when it’s time to re-apply. Michael Croix ...

manufactured by stamp-maker Shachihata Inc., allow victims of harassment to mark their assailants with invisible ink, and also provide a deterrent to would-be attackers. A limited run of 500 ...

Because of the amount of ink in printer cartridges and stamp pads, seek medical attention if the ink from one of these sources has been consumed. Poisoning from ink on your skin Ink poisoning ...