Pornography triggers brain activity in people with compulsive sexual behavior – sex addiction – similar to that triggered by drugs in the brains of drug addicts, according to new paper. 

One of your earliest science memories in school is learning that, during photosynthesis, plants take in carbon dioxide sunshine and produce oxygen. Later we all learned that in lakes and oceans a similar process happens due to cyanobacteria. 

What has remained unknown is exactly how that happens.

Oxygen formation in photosynthesis occurs in a reaction sequence that is completed within one thousandth of a second, so it's not surprising that it has been so difficult to prove experimentally how precisely a catalyst consisting of four manganese ions and one calcium ion (Mn4Ca cluster) performs this reaction sequence in photosystem II.

Imagine getting this text message when you are at the pub tonight: "Looking forward to seeing you at 2 AM - General Hospital".

Creepy, but it may work. 

Young adults who screened positive for a history of hazardous or binge drinking reduced their binge drinking by more than 50 percent after receiving mobile phone text messages following a visit to the emergency department, according to a new paper. 

While almost everyone agrees that the American health system was not perfect - high quality, but some could not afford it - the solution may not have been more government spending, since government was not spending money all that wisely well before 2009. 

Take one data point:  Medicare breast cancer screening. You are not for breast cancer, right? No one is. Yet while breast cancer screening costs for Medicare patients skyrocketed between 2001 and 2009, there was no earlier detection of breast cancer.

By identifying the molecular structure of a vital biological chemical, researchers may have solved a long-standing debate. 

The controversy is about a form of enzyme called a heme (or haem, as in haemoglobin) at the center of which is an iron atom (Fe) called a 'ferryl' which becomes oxidized when a reacting heme is in an intermediate state called Compound I.

The question is whether this oxidation involves just an oxygen atom (O), or a hydroxyl group (OH). The difference being one hydrogen ion, or in other words, a proton.

There is a subset of academia that contends it lacks diversity. They have a point. While at the undergraduate levels there are lots of handicapped people, minorities, women and even Republicans, by the time grad school is finished there are fewer of all of those and at the tenure levels, not much diversity at all.

Even in medicine, where lots of women in the private sector juggle prosperous careers and families. In its academic counterpart, there aren't many women at all, and that may be costing academia valuable research talent.