Smithsonian Magazine on MSN

Naked Mole-Rats Prefer Low-Oxygen Air That Would Kill Most Mammals, Adding to Their List of Death-Defying Superpowers

These underground rodents are the first mammals found to actively choose air with lower-than-normal oxygen levels. Their ...

Young men want to get big. For some, it's becoming an obsession

Some teen boys are determined to grow more muscular to match their social media idols. Going to the gym and manipulating ...