• Memory Complaints Linked to Dementia Diagnosis Many Years Later, New Study Finds

  In a U.S. study that followed older women for nearly 20 years, those who complained of memory lapses were more likely than others to later be diagnosed with mild thinking problems or dementia.

  

• Donald Trump Leads on Social Media Ahead of Republican Debate

  Ben Carson may be ahead of Donald Trump in the most recent national Republican presidential primary opinion poll but the celebrity billionaire is still the winner on social media.

  

• Spacewalking Astronauts Prep Station For Space Taxi Parking Spots

  A pair of U.S. astronauts floated outside the International Space Station on Wednesday doing electrical work to prepare the low-orbit outpost for new commercial space taxis and to tackle routine maintenance jobs.

  

• Fewer Women Know Heart Attack Risks or Get Ideal Treatments, New Study Finds

  Young women may be less aware than men of risk factors for cardiovascular disease and less likely to receive procedures needed after the deadliest type of heart attack, two U.S. studies suggest.

  

• Fewer U.S. High School Students Using Cigarettes - But More Of Them Are Smoking Pot, New Study Finds

  As fewer U.S. high school students exclusively smoke cigarettes and cigars, more of them are using marijuana, a recent study suggests.