These Worms Have No Eyes, but They Avoid the Color Blue When a scientist noticed that blind nematodes avoid bacteria that make blue toxin, he wondered if they took color into account.

A baby boy’s eyes temporarily changed from dark brown to bright blue after receiving a common COVID-19 treatment. The 6-month-old from Thailand was diagnosed with COVID-19 after suffering from a ...

IT WAS two months after thinking he had been cured of the deadly Ebola virus that a doctor found out the killer bug was still lurking in his left eye, forcing his iris to change from blue to green ...