Look east at sunset on Jan. 3 to see the fully-lit lunar disk climb over the eastern horizon. It will likely take on a ...

Over the past two decades, archaeologists have discovered a number of sites that show that people first arrived in the Americas as early as 16,000 years ago. Some scholars have explored sites that ...

As a new year kicks off, the world’s Northern Hemisphere has settled into the frosty peak of winter, while nature and people buzz with a fresh lease of life in the south. Tanzania enters the height of ...