A giraffe's long legs aren't just for height, they save energy by reducing how hard the heart works to pump blood upward ...

Researchers from Cornell University and the University of Pennsylvania have created a lifelike robotic lionfish with a circulatory system, reports Gizmodo. That circulatory system enables the fish to ...

This new imaging technique, when applied to humans, could both improve our understanding of the circulatory system (veins, ...

Nitric oxide is a messenger in your body — it’s released to tell various systems what to do. Most notably, nitric oxide ...

Quirks and Quarks19:53Our planet’s circulatory system depends on animals eating, excreting and expiring From the tiniest insects to the largest whales, biologist Joe Roman says animals play an ...

A new mechanism that regulates the way blood vessels grow and connect to each other has been discovered by an international team of researchers. The knowledge might open up new opportunities for ...

Water and nutrients are important to keep living things alive and healthy. Animals, including humans, get these from what they eat and drink, but how do the water and nutrients get transported around ...

When you're dreaming, time becomes fluid. The steady, firmly ingrained progression of seconds, minutes, and hours breaks from its linear, unilateral form to allow for drastic changes in magnitude and ...