Is black a colour? Black isn’t in the rainbow, but where does it fit in the colour spectrum? What makes something appear black? An expert explains how we perceive black.

In a cryptic post, OpenAI appears to be pondering an orb. Over the weekend, the official X account for the company's AI chatbot ChatGPT posted a black-and-white image showing a large blacked-out ...

In a tradition that scholars date to the 19th century, smoke released from a chimney will be colored white if the cardinals have made a decision, or black if they remain deadlocked.