Why humans in Africa fled to the mountains during the last ice age

People in Ethiopia did not live in low valleys during the last ice age. Instead they lived high up in the inhospitable Bale Mountains. There they had enough water, built tools out of obsidian and relied mainly on giant rodents ...

Arizona city watches, worries as mountain area burns

Anxious residents packed up prized possessions Tuesday as hundreds of firefighters worked to keep a wildfire in a forested Arizona city away from homes and hoped the weather might bring some relief.

Health impact from smoke rises with more intense wildfires

Climate change in the Western U.S. means more intense and frequent wildfires churning out waves of smoke that scientists say will sweep across the continent to affect tens of millions of people and cause a spike in premature ...

Researchers examine the age of groundwater in Egyptian aquifers

Most of the water used by people in Egypt comes from the Nile River, which originates from precipitation over mountainous areas in the Ethiopian highlands. In areas far from the Nile River Valley, however, where water is ...

Tsunami signals to measure glacier calving in Greenland

In recent years, glaciers near the North and South poles, as well as in mountainous areas, have been shrinking due to the effect of global warming, becoming a significant contributor to the recent sea level rise. Calving ...

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