Afro-Brazilians search DNA for pre-slavery origins

More than a century after slavery officially ended in Brazil, DNA tests are giving Afro-Brazilians the intriguing chance to find out who they are beyond mere skin color.

Uranus' moon Umbriel

The 19th century was an auspicious time for astronomers and planet hunters. In addition to the discovery of the Asteroid Belt that rests between Mars and Jupiter – as well as the many minor planets within – the outer ...

Hurricane histories and carbon mysteries

A group of nine PhD students from the Department of Earth and Environmental Sciences at Columbia University has just arrived in Exuma, The Bahamas, for a week-long field trip.

To Yorubaland with drones, on the trail of the plague

The city of Ife has been significant to the Yoruba people of West Africa for as long as they can remember. It was briefly abandoned in the 19th century, and Gerard Chouin says the Yoruba repopulated the town, likely drawn ...

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