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- SCIENTIFIC AMERICANA DAY AGO

How roses evolved to become the flower of Valentine’s Day
Roses are red—but their ancestors looked rather different
- SCIENTIFIC AMERICANA DAY AGO

Axolotls can regenerate their thymus, a complex immune system organ
Axolotls can completely rebuild their thymus, a key immune organ
- SCIENTIFIC AMERICANA DAY AGO

How often do people fall passionately in love? The answer may be less than you think
A large survey of U.S. singles reveals the different ways people experience passionate romantic love
- SCIENTIFIC AMERICANA DAY AGO

First Proof is AI's toughest math test yet. The results are mixed
Experts gave AI 10 math problems to solve in a week. OpenAI, researchers and amateurs all gave it their best shot
- SCIENTIFIC AMERICAN7 HOURS AGO

Spaceflight literally moves your brain
Space's microgravity appears to shift the location of the brains of astronauts—without a clear effect on their health