Federal health officials say several disease-carrying tick species are expanding into new parts of the U.S. this summer, raising the risk of Lyme disease, Rocky Mountain spotted fever, and other infections. The warning matters most for people spending time outdoors in areas where ticks were once uncommon.

Travelers are taking more photos than ever on international trips, but researchers say most of those images are never viewed again. Experts point to smartphone habits, memory psychology, and digital overload as the main reasons.

Many air travelers blame cramped seats for sleepless flights, but sleep specialists say the bigger problem is the brain itself. Noise, stress, posture, dehydration, cabin pressure and a built-in threat response can keep even exhausted passengers from drifting off.

Spending hours comparing hotels, transit routes, restaurants and backup plans before a trip may reflect more than simple enthusiasm. Behavioral scientists say the habit often signals a mix of anxiety management, risk avoidance and a strong need for control.

That heavy feeling many travelers get on the final night of a trip is not just in their head. Mental health experts say it is a recognized form of anticipatory sadness tied to endings, routine changes, and the stress of returning home.

Travelers often vow to try something new, then default to a latte, croissant or iced coffee when they reach a foreign cafe. Researchers say the habit is tied to decision fatigue, risk management and the comfort people seek when they are far from home.