When Did We Start Using the + and - Signs?

Though most people in this world never want to think about math after high school, let's talk about its symbols. Where and when did the symbols for addition and subtraction get invented? We don't even question them when we see them now. But what the heck did people use before that? » 3/13/13 10:30pm 3/13/13 10:30pm

Sub-Zero Garbage Can Keeps Your Trash Nice and Frosty

Organic garbage, like banana peels and coffee grounds, stink. Sitting in your garbage can all day at room temperature guarantees that your place will smell like a dump. Not if it's frozen, however. » 3/31/09 5:40pm 3/31/09 5:40pm

The ±0 Electric Kettle From Japan

I've been thinking of getting an electric kettle for some time, and I think I've found the most simple, beautiful one I could ever hope for. The small container's power cord is stored inside the base, explaining that one seam you see running around the base of the unit. I'll have to pick this up in Japan or ask Doug » 7/04/08 10:30am 7/04/08 10:30am