Today’s debates over immigration and assimilation have their roots in patterns of settlement that go back centuries.

From orbit, Earth looks less like a postcard and more like a living system of light, color and motion, where human ...

China is attempting one of the most ambitious climate and land restoration projects on Earth, turning a swath of its arid north into a living barrier of trees to hold back encroaching sand. The ...

In total, the map measures approximately 10.5 feet long by 4 feet wide. It’s a monster! It includes every part of the Seven ...

Tanzania is set to see the highest growth rate by 2100 (1.22), followed by Mauritania (1.18), Benin (1.11) and the Democratic Republic of the Congo (1.01)— all in Africa. Sub-Saharan Africa is ...

Since 1978, China has planted more than 66 billion trees along its 2,800-mile-long northern border, and it wants to plant 34 ...