The serious hunt for alien life

Over half a billion people live by lakes that freeze over in the winter. But as the climate warms, those lakes are losing whole days of ice cover. Winters are also getting weirder, with more intense temperature swings that lead to multiple freezes and thaws. Those fluctuations ma ...  Show more

Folks over 65 are putting in a lot of screen time. In 2019, the Pew Research Center found that people 60 years and older spend more than half their daily leisure time in front of screens, mostly watching TV or videos. Since the pandemic, that screen time has increased. Is addicti ...  Show more

Recently, a group of world-leading scientists called for a halt on research to create ‘mirror life’ microbes amid concerns that the synthetic organisms would present an ‘unprecedented risk’ to life on Earth. Ian Sample tells Madeleine Finlay about why this work initially seemed e ...  Show more

You’re probably familiar with the concept of handedness—a glove made for your left hand looks basically like the one for your right hand, but won’t fit—it’s a mirror image. Many of life’s important molecules, including proteins and DNA, are chiral, meaning they can exist in ei ...

Guest: Dr. Filipe Pereira is an Associate Professor at the Lund Stem Cell Center at Lund University. The Pereira lab studies how hematopoietic cell fate is specified, maintained, and eventually modified or reversed. Inspired by the fields of stem cell biology, immunology, and can ...  Show more

Mitochondria are known as the powerhouse of the cell—but new research suggests they might be far more complex. Columbia University’s Martin Picard joins Scientific American’s Rachel Feltman to explore how these tiny organelles could be communicating and what that might mean for e ...  Show more