It’s all to do with the raindrops, says one reader, with them needing to be relatively uniform in size and well separated for ...

A double rainbow can mean something special depending on who you ask, and you definitely don't see them every day.

Whether you're in North America or Europe, these flight routes pass over stunning waterfalls, lakes, and other landscapes ...

Modern chemistry is increasingly focused on developing sustainable processes that reduce energy consumption and minimize waste. Photocatalysis, which uses light to promote chemical reactions, offers a ...