Large parts of today's Sahara Desert were green thousands of years ago.
articles
New Study Identifies Bird Species That Could Spread Ticks and Lyme Disease
Birds play an underrecognized role in spreading tick-borne disease due to their capacity for long-distance travel and tendency to split their time in different parts of the world – patterns that are shifting due to climate change.
America’s First National Wildlife Refuge
A bird-loving farmer living near Florida’s Pelican Island helped spur the creation of a national system of wildlife refuges.
Pioneering Research Unravels Hidden Origins of Eastern Asia’s ‘Land of Milk and Honey’
A study has revealed for the first time the ancient origins of one of the world’s most important ecosystems by unlocking the mechanism which determined the evolution of its mountains and how they shaped the weather there as well as its flora and fauna.
Gold Mining in Russia’s Central Aldan Ore District
In places where concentrations of the precious metal have been discovered, mining operations are large enough to be seen from space.
New Study Finds Women Who Develop High Blood Pressure After Giving Birth at Greater Risk of Developing Chronic Hypertension
Blood pressure that remains elevated over of time — known as chronic hypertension — has been linked to heart disease, which is the leading cause of death in the United States.


