Viral social media posts claiming a celestial "smiley face" will appear on Christmas are false. The "smiley face" illusion is an optical effect caused by the alignment of a crescent Moon and two ...

Imagine trekking through the lush, high-altitude rainforests of Maui or the Big Island, turning over a leaf, and finding a tiny creature smiling right back at you. This isn't a scene from a cartoon; ...