Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

Your eyes aren’t just a pretty feature of your face. They can provide surprising insights into your personality, your health status and where you came from. We talked to three experts—doctors and ...

When you spot a dog with blue eyes, it’s hard not to pause and stare. Those icy peepers are captivating, but they’re also relatively rare—fewer than 5% of adult dogs naturally have them. While this ...

The American Academy of Ophthalmology has issued a warning “sounding the alarm on over-the-counter eye drops advertised as eye color-changing solutions.” The warning emphasized, “These products are ...