"We think about green plants and then blue oceans and then another pale ... what we encounter around us every day. Finding one purple planet abundant with similar biology to the purple bacteria ...

Smooth, precise scraping reveals mesmerizing layers of blue and pink sand ... later this year Hubble Space Telescope Discovers New Planet! Bucking trend, McDonald's vows no egg surcharges as ...

The first life forms used retinal instead of chlorophyll, absorbing green light and reflecting red and blue—turning the planet an eerie purple. Chlorophyll wasn’t always king. Retinal ...