Dakota Johnson had some last-minute regrets about her outfit choice on “The Tonight Show” on Monday night, so Jimmy Fallon provided a quick fix in the form of a tissue. The NBC host then joked ...

Researchers have found evidence of a previously unrecognized soft tissue structure in the cheek region of many dinosaur species, which they've called the "exoparia." The finding deepens our ...

Dentin, the sensory tissue inside teeth, first evolved in the armored exoskeletons of ancient fish, serving as a sensory organ rather than for feeding. Fossil evidence shows these structures ...