Smithsonian Magazine on MSN

This ‘Clock’ Could Warn of Hidden Stresses to Animals, Offering a Long-Sought Signal That a Population Is Nearing Collapse

The epigenetic clock measures biological age and could help scientists assess the health of polar bears, dolphins, baboons ...

Tempo Pace Is Really Difficult to Master. This Sabrina Carpenter Song Helps Me Maintain Pace.

Music can help you nail all your training paces, so check out Runner’s World ’s high BPM playlist, long run playlist, and tips for mastering tempo runs. Plus, join Runner’s World+ to unlock your ...