Scientific American
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![[:es]The Evolutionary Origins of Friendship[:]](https://katedra.eus/app/uploads/2021/01/ba04a2f99cf3663874426c5b1a40a4ce.jpg)
[:es]The Evolutionary Origins of Friendship[:]
The emergence of this crucial kind of relationship relied on the ability to recognize the unique benefits others have to offer
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![[:es]Story of Mammoth Survival Is in the Soil[:]](https://katedra.eus/app/uploads/2021/01/800px-Woolly_mammoth_model_Royal_BC_Museum_in_Victoria.jpg)
[:es]Story of Mammoth Survival Is in the Soil[:]
Ancient DNA preserved in soil may rewrite what we thought about the Ice Age
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![[:es]Queen Bee Sperm Storage Holds Clues to Colony Collapse[:]](https://katedra.eus/app/uploads/2021/01/bees.jpg)
[:es]Queen Bee Sperm Storage Holds Clues to Colony Collapse[:]
Analyzing fluid from queen bees’ specialized sperm sacs can expose stressors
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![[:es]Is 70 Really the New 60?[:]](https://katedra.eus/app/uploads/2021/01/aciam.png)
[:es]Is 70 Really the New 60?[:]
People are aging better but not across the board. Education makes a dramatic difference
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![[:es]Rotating Sails Help to Revive Wind-Powered Shipping[:]](https://katedra.eus/app/uploads/2020/12/flettner.png)
[:es]Rotating Sails Help to Revive Wind-Powered Shipping[:]
A century-old concept, Flettner rotors, gets a fresh look as shippers cut back fuel
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![[:es]When Same-Sex Mating Makes Reproductive Sense[:]](https://katedra.eus/app/uploads/2020/12/star.png)
[:es]When Same-Sex Mating Makes Reproductive Sense[:]
Under the right circumstances, indiscriminate mating with both males and females can enhance animals’ evolutionary success
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![[:es]Scientists Failed to Use Common Sense Early in the Pandemic[:]](https://katedra.eus/app/uploads/2020/11/masks.png)
[:es]Scientists Failed to Use Common Sense Early in the Pandemic[:]
The WHO’s initial advice not to wear masks in the fight to contain COVID sowed dangerous confusion
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![[:es]Why Hatred and ‘Othering’ of Political Foes Has Spiked to Extreme Levels[:]](https://katedra.eus/app/uploads/2020/11/aijsbdfbaijpbn.png)
[:es]Why Hatred and ‘Othering’ of Political Foes Has Spiked to Extreme Levels[:]
The new political polarization casts rivals as alien, unlikable and morally contemptible
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![[:es]Climate Change Is Central to California’s Wildfires[:]](https://katedra.eus/app/uploads/2020/10/as.png)
[:es]Climate Change Is Central to California’s Wildfires[:]
Conservative pundits who tout land management as the main issue fail to see the big picture