Learn how to make a DIY paper airplane launcher using simple materials like cardboard, CDs, and small electric motors in this ...

Make a truth teller for light. Turn an old CD into a spectroscope to analyze light—you may be surprised by what you see. Try pointing your CD spectroscope at the fluorescent light in your room, sunlit ...

The top 18-month CD interest rates range from 3.95% to 4.00% currently. Here's how much a CD account with these two rates could earn, calculated alongside a variety of deposits and the assumption that ...