Stunning discoveries and fresh breakthroughs in DNA analysis are changing our understanding of our own evolution and offering a new picture of the "other humans" that our ancestors met across ...

Discover Flagstaff, the world’s first international dark-sky city Discover Flagstaff, the world’s first international dark-sky city How to plan a trip to Sequoia and Kings Canyon National ...

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Irritable bowel syndrome (IBS) is a common gastrointestinal disorder that can cause diarrhea, constipation, and bloating. In addition, IBS pain may feel like abdominal cramping or aching. Irritable ...