Joanne C

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Ghost signs of San Francisco: Forgotten treasures hiding in plain sight

If you think San Francisco has changed beyond recognition recently, try this: Take a walk downtown and look closely at the sides of as many buildings as you can. You'll find an ever-changing history of the city, dating back more than 100 years, hiding in plain sight.<p>SF teems with old, …

San Francisco

Could black holes be the dark matter everyone has been looking for?

By Joel Achenbach<p>, Reporter<p>We're waiting again for LIGO. And waiting.<p>You remember LIGO, right? Cast your mind back to February and the big hoo-hah at the National Press Club at which many of the world's top physicists celebrated the discovery of gravitational waves. Einstein affirmed again. Decades …

10 Oddly Effective Weight Loss Tips That Are Backed By Science

1 of 11<p>pressmaster/shutterstock<p>In the game of weight loss, the deck is stacked against you. Food marketers have spent millions researching colors, flavors, scents, and packaging in order to find the best ways of getting you to eat more. But in the past few years, brain researchers have discovered …

Why do we talk to ourselves? A new book investigates the voices in our heads

The Voices Within by Charles Fernyhough is an ear-opening book – and an important corrective to myths about schizophrenia, the brain and even our …

6 scientists who regretted their greatest inventions

Not often do you get a great idea. Even less often does anyone get a world-changing one. But what happens if these brilliant insights end up causing …