YouTube on MSN

How to Make a Door Alarm Simple - Theft Alert Alarm

Learn how to make a simple door alarm to enhance your home security with our step-by-step guide. This DIY theft alert alarm ...
YouTube on MSN

How to Make a Simple Fire Alarm

Learn how to make a simple fire alarm with our step-by-step guide in this video! Discover the essential components and straightforward process needed to build an effective fire detection system from ...
Smithsonian Magazine on MSN

Birds Make an Alarm Call That Spans Species and Continents—and May Offer Insight Into the Evolution of Human Language

More than 20 species make a nearly identical noise to warn nearby birds of brood parasites, a behavior that bridges the ...