Reasons not to hug, snuggle or kiss chicks and chickens

Sometimes it hurts to dispel facts with science, but a Texas A&M AgriLife expert said even though there is a National Snuggle a Chicken Day (celebrated on Jan. 8), he hopes people don't hug and kiss baby chicks and chickens ...

Mature sperm lack intact mitochondrial DNA, study finds

New research provides insight about the bedrock scientific principle that mitochondrial DNA—the distinct genetic code embedded in the organelle that serves as the powerplant of every cell in the body—is exclusively passed ...

Putting stem cells on pause

People are having children later than ever before. The average age of new parents in the United States has been rising for at least the past half century.

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