We all start our lives as symmetric balls of cells. In humans, during the first few weeks after fertilization, embryonic cells undergo several rounds of division, increasing their mass. Then comes ...

Baby milestones are the accomplishments or skills you can expect your child to achieve or learn in the first year of life.

Sandy Flash meets the little boy whose life she saved. Her eyes welled up with tears at first sight. Sonny, 1, was born with a disease that affected his liver function and needed a liver transplant.

More than 20 years after their births were documented by 'Good Morning America,' six people returned to the show to share ...

Developmental toys, walkers, puzzles, plushes and push toys are among the favorite toys for 1-year-old toddlers according to ...

By studying decay of bound-state beta decay of thallium-205 (205Tl81+), scientists can better understand the timing and conditions in the early solar system, giving clues about when the sun formed.

Roughly 1.77-million-year-old teeth show that slow development in hominids may have had an earlier start than previously ...