The new science surrounding sleep is revealing its critical role in human health. Neuroscientist and foremost authority on sleep Matthew Walker, Ph.D. argues that if you want to live longer and, more importantly, live healthier—sleep is the very best investment you can make.

What would make you feel happier? Most of us think we know the answer. However, according to cognitive scientist and Yale University psychology professor Laurie Santos Ph.D., the things we think will make us happy are probably the wrong things.

Is technology making us stupid? Are we sacrificing our ability to read and think deeply because of constant online distraction and addiction to smartphones and social media? Science and technology writer Nicholas Carr has explored these concerns in numerous articles and his New York Times bestseller The Shallows: What the Internet is Doing to Our Brains. The news is not good.