LONDON (WPVI) -- British researchers have developed a simple paper-based sensor that indicates when meat and fish have gone bad. The sensor traces amounts of ammonia and another chemical released by ...

This approach eliminates costly metals, toxic chemicals and specialised fabrication infrastructure — opening the door to ...

Engineers at the University of Washington have successfully created a new type of wearable sensor out of tissue paper, similar to toilet tissue, that’s capable of detecting a person’s pulse, the blink ...

Scientists have created a cheap, paper-based sensor that changes colour to detect deadly gases within minutes, even in high humidity. It could provide a fast, portable tool for environmental ...

URBANA, Ill. - Many low-income countries have turned to mass food fortification programs to address nutrient deficiencies in their populations. But many of these programs lack the resources needed to ...