You might think that explaining why the sky is blue would be kind of simple. But even a brief explanation of it requires a lot of science. The colors of everything you see are produced in ...

See photos of all shades of blue, from National Geographic.

Image: Watch the Lions tour of Australia live on Sky Sports in 2025 Sky Sports will exclusively show the 2025 British and Irish Lions tour of Australia, with all three Tests against the Wallabies ...