Capillaries in lung. Capillaries surround the individual alveoli ,air sacs, allowing for the exchange of oxygen and carbon dioxide between the capillaries and the alveoli.
What is epigenetics? The science of how our inherited (nature) genes can be altered through lifestyle (nurture) -- including nutrition, exercise, stress, and environment.
Obesity Article, Obesity Epidemic Information, Diet Facts -- National Geographic
Read a National Geographic magazine article about obesity and get information, facts, and more about the obesity epidemic.
42 Mind-Boggling Images That Will Melt Your Brain
The internet is a vast and sometimes weird place. Every once and a while we'll come across those images that leave us dumbfounded. Here are 42 of the best.
Twinkling Galaxies Fill the Silhouettes of the Female Form
New Jersey-based photographer Taylor Allen overlays the twinkling visuals of galaxies over the female form in his series titled Astronomy. The