These short anomaly-detection puzzles are designed to illustrate how reasoning often depends on identifying inconsistencies ...

The eastern tropical Pacific Ocean is known for its large low-oxygen zones that are increasing in size, putting marine life at risk. New research shows that 15 million years ago, the opposite was true ...

Congestive heart failure (CHF) and kidney disease share a two-way relationship. CHF reduces blood flow to the kidneys, while kidney disease can increase blood pressure and strain the heart. Treatment ...