Math
New Take on an Ancient Method Improves Way to Find Prime Numbers
The modified version of the sieve of Eratosthenes could accelerate computer calculations
Stories by Matías Loewy
Arts & Culture
Mummy Hair Points to a Low-Stress Life in Ancient South America
Scant cortisol levels in mummified locks change ideas about pre-Hispanic Chile natives
Sustainability
North American Beaver Invasion Occupies Forests and Steppes in Southern Chile and Argentina
Introduced from Canada in 1946, the rodents have exponentially reproduced and are expanding throughout the Southern Cone
