Hospitals often use code names to alert staff to an emergency. Code blue means a medical emergency. Code red means fire or smoke. Code black typically means there is a bomb threat. Hospitals are the ...

This article, originally posted on Sept. 23, 2019, was last updated on Dec. 3, 2025. Please note that these statistics aren’t updated regularly. Always check with your state’s hospital associations ...

Scalable quantum technologies require the ability to maintain and manipulate coherent quantum states over an arbitrarily long period of time. It is problematic then that the small quantum systems that ...

Did you know you can customize Google to filter out garbage? Take these steps for better search results, including adding Lifehacker as a preferred source for tech news. To take the best notes in ...

Quite often, we need to identify a color on a web page or in an application, so that we can use it on our blogs or apps as well. In such a case, we need to make use of tools to identify the color ...

When creating entries in a digital calendar for the first time an obvious action would be to color-code different kinds of events, perhaps by using a popup menu that has categories names and ...

Several versions of Microsoft Outlook ago, you could use color to identify appointments by quickly applying a category. Outlook no longer supports this feature, although, with a little roughhousing, ...