Physicists show knotted cosmic strings may have dominated the early universe before collapsing to create matter—a theory ...

A giraffe's long legs aren't just for height, they save energy by reducing how hard the heart works to pump blood upward ...

Seven minutes into the video, the whales attacked a second juvenile white shark. This one was worked over repeatedly until its liver began protruding from the right side of its body, partially exposed ...

New meta-analysis finds skipping breakfast or short fasts doesn’t dull your mind. Your brain adapts seamlessly using glucose or fat for fuel.