Panthera blytheae is the oldest big cat fossil ever found and fills a significant gap in the fossil record, according to results announced today.

The Panthera blytheae skull was excavated and described by a team led by Jack Tseng, a postdoctoral fellow at the American Museum of Natural History (AMNH) in New York.

There's no mystery like the mystery of folk lore. Scientists will find the missing link and dark matter before historians will definitely figure out the phylogeny of ancient tales - but for only $1,200 you can write a paper and get it published in a journal.

An international team say they know what is inside the enigmatic jets emitted by black holes. Jets are narrow beams of matter spat out at high speed from near a central object, like a black hole.

If the spirit is willing the flesh is not so weak. 

It's a common enough tale, told throughout the history of literature. A parent prefers their 'real' children and the life of the step-child is miserable as a result, compared to the biological child.

That "Cinderella effect" claims that it is biologically inevitable that parents care less for stepchildren because they do not spread their genes - as you might expect, actual biologists did not come up with it, anthropologists did. And the authors of a new paper recognize something you knew all along; in many cases, the value and personality of a step-child matters more than biological inheritance, just like with biological children. 

Trastuzumab and anthracyclines given concurrently are effective at treating HER-2-positive breast cancer but there is worry that this could lead to increased risk of cardiac toxicity.

New research shows these agents do not need to be given concurrently to achieve a high rate of complete pathological remission. The findings investigated the timing of trastuzumab administration with anthracycline and taxane chemotherapy.

The randomized phase III trial enrolled 280 women with operable HER-2 positive invasive breast cancer at 36 centers across the United States from September 2007 through December 2011.