Melanin—and specifically, the form called eumelanin—is the primary pigment that gives humans the coloring of their skin, hair, and eyes. It protects the body from the hazards of ultraviolet and other ...
About 2.5 billion years ago, a pigment called chlorophyll appeared in single-celled organisms, allowing them to capture energy in the form of light and convert it into sugars. This biochemical trick, ...
PORTLAND, Ore. — Current solar materials must be chosen to match a specific wavelength of sunlight, but a new hybrid inorganic/organic material could usher in solar cells that absorb all solar ...
Your body absorbs heme iron from meat, fish, and poultry more easily than non-heme iron from plant foods. Heme iron is absorbed at rates up to 40%, while non-heme iron is absorbed much less ...
Caffeine is a natural stimulant. Some studies claim it interferes with the absorption of iron, but research is mixed. In addition to helping you start your day in the morning, consuming caffeine has ...
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