Latest Biology & Health News

Understand adult sleep recommendations, evening exercise evidence, and why persistent insomnia deserves clinical assessment and structured treatment.

Comic book heroes make flight look effortless — but a serious look at biology and physics shows why human flight is one of nature's hardest engineering problems.

Viruses and bacteria both cause infections and both are too small to see, yet they differ in size, structure, reproduction, and treatment. Here is how to tell them apart.