How does an eraser work?

When you rub an eraser across a pencil mark, the abrasives in the eraser gently scratch the surface fibers of the paper to loosen the graphite particles.

Questions and Answers: The Higgs Boson

As I told you shortly before, we’ll be answering all questions we receive from you guys on the site here, so everybody can benefit; again, if you have any scientific questions, to throw them our way and we’ll get them as soon as possible Question: What the heck is a Higgs Boson, and why should we care? This one’s tricky.

Answering our readers: The Earth’s core

I’ve been receiving questions from you people for years now – and really, this made me happy, because it says that people want to learn and understand more. But I’ve been answering them individually, and now, I’m thinking it would be better to post the answers on the website, so more people can read them. So, starting today, we have