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Is anybody out there? Probably.

HIV is infamous for its ability to hide in the human body for decades, typically requiring long-term treatment to prevent a rebound from dormancy.

Clusters of cells grown in the lab have been encouraged to produce human blood stem cells in a discovery that could one day supplement donations to people with blood disorders like leukemia and lymphoma.

We've known for a long time that women are more likely than men to have migraine attacks.

A newly identified link between two notorious geologic zones suggests a major earthquake at one site could trigger another huge quake at the other, creating a double-whammy of destruction.

Everyone gets headaches.

How fast we lose teeth in old age has been linked to a person's risk of dying in a comprehensive new study, emphasizing the importance of good oral health, and suggesting tooth loss could be a key indicator of other serious health problems.

Super-resolution microscopes have revealed a whole new type of connection between neurons in mouse and human brains.

Scientists in the United Kingdom say they have developed a blood test that can diagnose myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) with 96 percent accuracy - the first of its kind.

Human sperm can swim through surprisingly viscous fluids with ease - and they seemingly defy Newton's third law of motion to do so.