NASA's Curiosity rover on Mars, which first landed inside the Gale Crater on Aug. 6th, 2012, may provide clues as to how the red planet lost its original atmosphere, which scientists believe was much thicker than the one left today.

Heart tissue sustains irreparable damage in the wake of a heart attack but because cells in the heart cannot multiply and the cardiac muscle contains few stem cells, the tissue is unable to repair itself — it becomes fibrotic and cannot contract properly.

The search is on for innovative methods to restore heart function and so scientists have been exploring cardiac "patches" that could be transplanted into the body to replace damaged heart tissue. 

If a physics department has no women, does that mean there is hiring discrimination?

Only if your job in sociology is to find discrimination. Simple statistics shows that is not true or there would be claims of discrimination in psychology, where lots of departments have no men. Yet when it comes to gender equality advocates, physics is always mentioned and psychology never is.

A new analysis by the American Institute of Physics (AIP) Statistical Research Center debunks the claim that the existence of all-male departments is evidence of hiring bias. Labor statistics have backed that up; not only are women hired equally for faculty and tenure jobs in science academia, they are over-hired based on their representation. 

Everything in moderation, goes an old saying, and it is true that too much alcohol can be bad for you in lots of ways.  But teetotalers, those who abstain from alcohol completely, aren't extending their lives either.

As a class, people who don't drink at all have a higher mortality risk than light drinkers. But nondrinkers are a diverse bunch, and the reasons people have for abstaining affects their individual mortality risk, in some cases lowering it on par with the risk for light drinkers, according to a University of Colorado analysis.

Maybe some day, depression and anxiety could benefit from good vibrations.

University of Arizona researchers have found in a recent study that ultrasound waves applied to specific areas of the brain appear able to alter patients' moods. The discovery has led the scientists to conduct further investigations with the hope that this technique could one day be used to treat conditions such as depression and anxiety.

Tomorrow, we are being photographed from space.

No, it is not another NSA spying operation, it is NASA's Cassini and MESSENGER spacecraft, taking pictures of Earth from Saturn and Mercury.

The image taken from the Saturn system by Cassini will occur between 2:27 and 2:42 PDT (that's 5:27 and 5:42 p.m. EDT and 21:27 and 21:42 UTC) tomorrow, July 19th. Since Cassini is 898 million miles away from us, nearly 10 times the distance from the sun to Earth, it may not see you specifically but NASA is encouraging the public to get participatory and wave at Saturn at the time of the portrait and then pictures via social media.