Sharks, skates and catfish also have tooth-like structures called denticles that make their skin feel like sandpaper. When ...

New research shows that dentine, the inner layer of teeth that transmits sensory information to nerves inside the pulp, first evolved as sensory tissue in the armored exoskeletons of ancient fish.

Teeth are sensitive because they evolved from sensory tissue in both ancient vertebrates and ancient arthropods.

Sharks have been evolving for more than 450 million years, developing skeletons not from bone, but from a tough, mineralized ...

State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, and Center for Environment and Health and Beijing Innovation Center for ...

2. Harbaugh debuted a new practice structure for this year’s rookie minicamp. The Chargers did not hold any 11-on-11, seven-on-seven or even one-on-one drills. The goal, Harbaugh said ...

Happy Friday! You may have noticed there was no Pentagon Rundown last week. That’s because I was at the Modern Day Marine exhibition in Washington, D.C., writing about various topics, including ...

According to Newsweek, officials believe internal communications support this claim and could set a precedent for future enforcement. Meanwhile, Facebook continues to draw criticism over how it ...

John Fetterman’s popularity is sinking among Democratic voters in his backyard, according to an internal poll obtained by POLITICO — one of the first major indications that the Pennsylvania ...

according to an internal report obtained by CNN. In reality, the safety concerns officials downplayed appear to have occurred multiple times since the new system went into place last summer ...

INDEPENDENCE, Wis. (WXOW) – Several callers reported a structure fire at Bushy's Meat Market in Independence to the Independence Police Department Thursday evening. According to the Police ...

When coral is bleached, only its white, skeleton-like inner structure remains, making it weaker and less likely to survive in the harsh ocean environment. Other causes of bleaching include overfishing ...