Science - Wikipedia

Science Advances. ONLINE COVER Artistic rendering of light concentration by a bundle of cone photoreceptor mitochondria in the eye. According to Ball et al., in addition to delivering energy, these tightly packed mitochondria focus light for vision. Acting as microlenses, the mitochondria also provide directional sensitivity to light.

Science - National Geographic

Science (from Latin scientia 'knowledge') is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe.. The earliest roots of science can be traced to Ancient Egypt and Mesopotamia in around 3000 to 1200 BCE. Their contributions to mathematics, astronomy, and medicine entered and shaped Greek natural philosophy of ...