The right software can turn your smartphone into a spy device that watches everything you do. Scary, I know. Here’s how to check if your phone is infected. While you’re at it, check your computer.

Some toys are timeless. From monster trucks that power over boulders to speed demons that clock 70 miles per hour, RC cars can thrill anyone who gets a controller in their hand for hours on end.

See how to make an RC car using a DC motor with this simple DIY guide. Follow the easy steps to design, build, and control your own remote-controlled car, perfect for a fun and creative home project.