Scientists have created the highest resolution map of the dark matter that threads through the universe—showing its influence ...

The development of humans and other animals unfolds gradually over time, with cells taking on specific roles and functions ...

Cannabis drug tests measure tetrahydrocannabinol (THC) and its metabolites, which can stay in your body long after the “high” fades. Detection ranges from hours in blood or saliva to weeks or months ...

Protect your eyes as you watch this month's partial solar eclipse with our guide to purchasing safe and certified solar eclipse glasses. When you purchase through links on our site, we may earn an ...