Norway and black rats (Rattus norvegicus and Rattus rattus) are ubiquitous urban pests, inhabiting cities worldwide. Despite their close association with people, urban rats remain difficult to control ...

It's natural to want white teeth, but professional teeth whitening can be expensive. If you desire a brighter smile but don't want the hefty dentist bill that comes with it, consider at-home ...

If you want whiter teeth, you don't need to shell out huge amounts on professional services. DIY teeth whitening products can get you a brighter smile at home. We've found the best comprehensive ...

Teeth and bones are mineralized tissues with similarities, but teeth are not bones. They share similar properties, but differences in their makeup and function set them apart. For instance, teeth ...

If you’re an adult human, odds are you already know a thing or two about tooth regeneration. Around age six, most of us begin to lose baby teeth in a process called eruption, exchanging our ...

Urban dwellers in Washington D.C., San Francisco, Toronto, New York City, and Amsterdam might have seen rats scurrying across their cities — and they're not imagining an influx. Rat populations ...

Copyright 2025 The Associated Press. All Rights Reserved. A rat leaves its burrow at a park in New York City on Sept. 17, 2015. ( AP Photo/Mary Altaffer, File) A rat ...

New York’s weather has many residents scurrying from the cold to cozy spots. Including the rats. The United States' most populous city has been spared the Upper Midwest's extreme wind chills ...

Scientists have some good news for rats and some bad news for city dwellers. Rat populations are rising in cities including Washington, D.C., and San Francisco, reports a study released Friday ...

New York City's wild rat species — Rattus norvegicus, also called the Norway rat or brown rat — doesn't hibernate in winter but does become less active when the weather is freezing for ...

Without proper treatment, tooth infections can spread to other areas of the body, leading to serious and potentially life threatening complications. A tooth infection, or a tooth abscess ...