Scientists are testing a novel way to measure cosmic expansion using time delays in gravitationally lensed quasars. Their ...

New measurements using gravitational lensing suggest the universe’s current expansion rate does not agree with signals from ...

Study finds kids exposed to 32°C+ temperatures score lower on early learning assessments. Climate impact explained.

Photoplethysmography (PPG) is an optical sensing technique that measures blood volume changes and underpins devices ranging ...

Researchers at Bielefeld University have analyzed how reliably AI methods can detect pulse rates from simple video recordings ...

ChatGPT started the AI revolution, but it isn't the only chatbot worth using. We've tested the best AI chatbots to help you determine which one is right for you. I’ve been writing about consumer ...