Murky green algal blooms are more than a major eyesore; they reveal that a body of water could be unsafe for swimming or drinking. Currently, however, there isn't an effective warning system for ...

Chemists in South Korea have created a stable color-changing sensor that displays an easily quantifiable response to the pH of its surroundings. Published in Microsystems & Nanoengineering, Dong-Hwan ...

Scientists at Queen’s University Belfast have invented a tiny indicator that changes color if a patient’s wound shows early signs of infection. The non-invasive indicator, which is around the same ...

A surplus of phosphorus in freshwater systems causes algae, such as phytoplankton and cyanobacteria, to grow out of control, turning the water into a “pea soup” of these organisms. Blooms can threaten ...