(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Curious Kids is a series for children of all ages. If you have a question you’d like ...

From creaky brass door hinges to antique silver, you can rehabilitate the metal in your home with some cheap tools and simple techniques. Steel, brass, silver and aluminum tools, looking as good as ...

I grew up with the idea that the Moon was a dry, airless rock where metal simply sat unchanged for billions of years. The discovery of actual iron rust in lunar soil has blown a hole in that picture, ...