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“Americas”

Ancient spearheads reveal how Ice Age humans learned the land

At the end of the last ice age, early humans crisscrossed the Americas following seasons, rivers and game, often with a trusty spear in hand. Nearly 13,000 years later, archaeologists are using those spearheads to study how America's first inhabitants understood risk.

Phys.org - latest science and technology news stories · ٢٨ سبتمبر ٢٠٢٦، ٠٩:٢٠ م

العلوم والبيئة

The Andes were supposed to stop this cacao killer. They didn't.

Black pod disease destroys up to a quarter of the world's cacao every year, roughly 700,000 metric tons worth more than $2 billion. The water mold responsible across the Americas is Phytophthora palmivora, and in Colombia it is the dominant Phytophthora on cacao. How it travels a

Phys.org - latest science and technology news stories · ٢٨ سبتمبر ٢٠٢٦، ٠٧:٤٠ م