If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...

For the first time, the Greater Bengaluru Authority (GBA) has introduced a QR code system to help people locate the nearest vaccination centre. The National Pulse Polio Programme will start from ...

Over the past decades, engineers have introduced numerous technologies that rely on light and its underlying characteristics. These include photonic and quantum systems that could advance imaging, ...

A pulse oximeter measures blood oxygen levels at home and in healthcare settings. Abnormally low readings on a pulse oximeter might require medical care, especially if they are below 92%. Skin color ...

Read full article: ’I fear for my life:’ Supporters return to Pulse nightclub despite online threats ORLANDO, Fla. – The city of Orlando removed items from inside the Pulse nightclub building Monday ...

If you have trouble breathing, your doctor may recommend a few tests to figure out what’s causing it. Some measure how much air you breathe in or out or how much oxygen is going from your lungs to the ...