العلوم والبيئة
Ancient spearheads reveal how Ice Age humans learned the land
المصدر: Phys.org - latest science and technology news stories · نُشر
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.
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.
أخبار ذات صلة
Ancient meteorites reveal a powerful force that helped build the Solar System
Ancient grains inside one of the oldest known meteorites reveal that a surprisingly strong magnetic field existed during the solar system’s first 200,000 years. The discovery suggests magnetism worked alongside gravity to help transform a vast cloud of gas and dust into the sun a
All Top News -- ScienceDaily ·
Nearly a Decade Later, the Electric Tesla Semi Is Here
A Nevada event aimed at a niche audience of fleet managers could mark a milestone in clean transportation.
WIRED ·
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 ·
The Solar System chose fire over ice from the very beginning
Ancient iron meteorites reveal that some of the Solar System’s first solid bodies were built mostly from tiny heat-forged rock beads called chondrules, while water-rich dust was largely excluded. The finding pushes this selective planet-building process back to within the Solar S
All Top News -- ScienceDaily ·
Myanmar army air strike kills dozens in Rakhine state
Nearly half a million people are displaced in Rakhine as a result of the conflict between the military and rebel groups.
Al Jazeera – Breaking News, World News and Video from Al Jazeera ·