Global warming is the gradual heating of Earth's surface, oceans and atmosphere.
Megalodon was the largest shark and one of the largest fish on record. It went extinct about 2.6 million years ago.
Jerusalem is the epicenter of several of the world's major religions, but its importance is much more than just spiritual.
Anemia is a common condition that may be caused by a shortage of iron, abnormal bleeding, infections, cancer or gastrointestinal problems.
The global increase in carbon dioxide emissions is not only warming our planet at an alarming rate, but it's also making our oceans more acidic.
This parasitic infection hijacks rodent brains and infects people through dirty cat litter. There's a good chance you have it.
Neuroblastoma is a rare form of childhood cancer that occurs when early forms of nerve cells don't develop correctly.
Your body might fall apart were it not for collagen. Good thing a healthy body naturally produces all the collagen it needs.
The amygdala is often referred to as the "fear center" of the brain — but this name hardly does justice to the amygdala's complexity.
Hair loss is typically considered the domain of aging men, but this equal-opportunity condition — which has many causes — can affect virtually anyone.
Nutria, also known as coypu or swamp rats, are large rodents that wreak havoc on their non-native ecosystems.
What do football players and sugarcane harvesters have in common? They may all be at risk for heat exhaustion — a hazardous condition that can lead to fatal heat stroke.
Pneumonia is a common infection that causes inflammation in one or both lungs. It's typical symptoms are a cough with phlegm, fever, chills and difficulty breathing.