“In this vast range, there’s only one…infinitesimally small band which has the right energy for photosynthesis,” a prerequisite for human life. Coincidence? Read More ›
How different our perception of reality would be if our brains processed visual signals from the optical nerve as only varying shades of beige or pink or grey! Read More ›
At the end of a perfect day, when the Sun is setting, the beams of light we see slant through the atmosphere nearly parallel (tangent) to the Earth’s surface. Read More ›
