Lots or Little Sleep Linked to Sick Days

New evidence points to the evolution of the ability for bacteria to grab nitrogen from the atmosphere some 3.2 billion years ago, about 1.2 billion years earlier than thought—with implications for finding extraterrestrial life. Lee Billings reports 

A dwarf galaxy near the Milky Way may consist of more dark matter than regular matter.* Clara Moskowitz reports 

overworked and almost burned out after doing crazy hours at training and at work that my sleep quality was so poor it was basically non-existant. Working hours reached, at their worst, nearly 100 per week – average was easily over 60. So where did I cut the time for working out a ...  Show more

Colin Lowther and Liz Waid look at the history and science of sleep. They investigate the benefits and troubles of getting a good night’s sleep. 

In my early twenties, I looked at leaders around me who, so I thought, only needed four to six hours of sleep per night. I envied them, so I decided to give it a try. After a week of getting only six hours of sleep a night, I wound up sick, and it took a week or two before I retu ...  Show more

Pour prendre un peu de recul sur ce qui nous arrive, retour sur la petite et la grande histoire des épidémies avec Caroline Lachowsky qui a joint cette semaine le médecin et essayiste Luc Périno qui vient de publier Patients zéro aux éditions de La Découverte.