There were 93 school shootings in the US in a recent two-year period but they were rarely committed by students. Sometimes they were former students of the school but new a survey analysis say their mental health issues may have been aggravated by memories of bullying.

A wearable, pocket-sized, automated insulin delivery device has been approved by the US Food and Drug Administration (FDA). The company calls is the iLet Bionic Pancreas but it's obviously not bionic any more than String Theory is a scientific theory. However, it is now available in this universe for the almost two million Americans with type 1 diabetes.

Sepsis causes 11 million deaths annually so preventing that requires prompt recognition, source control, antibiotics, fluids and vasopressors.

Sometimes adjunctive therapies such as orticosteroids help but the science is inconclusive. A recent study was designed to evaluate the role of corticosteroids in the management of patients with septic shock and the contradictory effects on mortality as recorded in past research and treatment.

In recent geological history, 90,000 of every 100,000 years have been ice ages. It's been 12,000 years since the last one so we may be due.

Or not. Climate science has a few rules but a lot of exceptions and 700,000 years ago a big exception occurred. At that time the planet experienced a “warm ice age” and it permanently changed the climate cycles on Earth. Though it became warmer and with more rain, the polar glaciers also expanded. Geological data in combination with computer simulations published in Nature Communications hopes to lend insight into this paradox.

Screening is underway to find a patient for the world's first bladder transplant in humans. 

If a vaccine requires cold storage for shipping, many areas where infrastructure doesn't hold up are unable to receive them. A possible solution to this problem is a mobile vaccine printer that could produce hundreds of vaccine doses in a day.

The printer produces patches with hundreds of microneedles containing the vaccine. The patches can be attached to the skin, allowing the vaccine to dissolve without the need for a traditional injection. Once printed, the vaccine patches can be stored for months at room temperature.

In their paper, the scientists used the printer to produce thermostable Covid-19 RNA vaccines that could induce a comparable immune response to that generated by injected RNA vaccines, in mice.