The dilemma of our immune system is comparable to the story of Icarus and Daedalus from Greek mythology. To escape their captivity, Daedalus built wings from feathers and wax for himself and his son. Daedalus warned his son that he must neither fly too high but also not too low, otherwise the sun's heat or the humidity of the sea would destroy his wings and he would crash. After they had successfully escaped, Icarus became boisterous and flew higher and higher until the sun began to melt the wax of his wings and he fell into the sea. Similarly, an over- or under-reaction of our immune system can be life-threatening.

Minimal access hip arthroscopy surgery has become the treatment of choice for hip pain in young adults, but a team surgeons believe the procedure is a sham, more like acupuncture than helpful. 

In North America, arthroscopic hip surgeries have replaced open surgeries as the go-to cure for femoroacetabular impingement (FAI), a common source of hip pain in young adults, where abnormal femurs lead to damaged cartilage in the hip joint. The number of such procedures increased 18-fold in the U.S. within a decade, especially with athletes.

Scientists have pieced together an early human habitat for the first time, and life was no organic picnic 1.8 million years ago. Nature was out to kill us and the struggle our ancestors face, as all creatures do, is survival. Rather than the myth of ecological balance, if you were going to survive, you got there earlier and were more fit to last. 

How did Madagascar once slot next to India? Where was Australia a billion years ago?

Cloud-based virtual globes developed by a team led by University of Sydney geologists mean anyone with a smartphone, laptop or computer can now visualise, with unprecedented speed and ease of use, how the Earth evolved geologically.

Reported today in PLOS ONE, the globes have been gradually made available since September 2014. Some show Earth as it is today while others allow reconstructions through 'geological time', harking back to the planet's origins.

An international team of researchers, with the participation of the University of Granada (UGR), has revealed new data on why breast cancer has a higher incidence and is more aggressive in obese people. The reason is that peritumoral fat (the fat around the tumor) facilitates the expansion and invasion of cancer stem cells (CSCs), which are responsible of the onset and growth of the tumor.

Often patients undergo procedures without real informed consent being achieved due to technical language, jargon and time pressure, with up to half of patients finding it difficult to understand what their doctor tells them [1, 2]. Now a group of Australian doctors has prepared patients for surgery using iPads, and found that patients' understanding was much better than after a face-to-face consultation.

It is vitally important that patients understand what medical procedures they face, both so that they can cope better with the procedure, and so that they can give fully informed consent to the treatment. However, many patients come out of critical face-to-face interviews with doctors not really understanding what to expect or what they might have agreed to.