Amazon’s latest Kindle update stops you removing DRM from newly downloaded e-books, making them impossible to back up.

Once your data is backed up, perform a full reset of Windows 10. Go to Settings, then Update & Security, then Recovery, and choose Reset this PC. Next, select Remove everything and then choose to ...

The original version of this story appeared in Quanta Magazine. Hard problems are usually not a welcome sight. But cryptographers love them. That’s because certain hard math problems underpin the ...

In the scope of housework, hard water stains are high on the list of public enemies in my home. Because we live in a place with hard water, they're devilishly difficult to remove (and incredibly quick ...

Dealing with hard water stains in your toilet? These left behind mineral deposits can make your toilet look incredibly dark and dingy and be even harder to get rid of the longer they sit. If you live ...