Laboratory-grown replacement organs are the future; since they will be grown from a patient's own cells, there will be no need for immuno-suppressive drugs, and it will eliminate the need for organ donors and waiting lists.

Toward that goal, scientists have grown a fully functional organ from transplanted laboratory-created cells in a living animal for the first time; a thymus, the organ next to the heart that produces immune cells known as T cells that are vital for guarding against disease. 

Long before wheat and sugar, a popular craze against salt swept America. The salt in this case was the popular flavor enhancer monosodium glutamate (MSG), common in Chinese food, soups and meats.  Glutamic acid is also naturally present in our bodies.

It was used as an additive starting in 1908, it gives food  its savory umami flavor, but once it got public attention, anecdotes began to pour in about lots of non-specific symptoms that must be caused by it, despite the fact that hundreds of millions of Chinese people did not report headaches. 

Bacteria growing in near darkness can still harvest energy and produce oxygen from sunlight.

Cancer screening is one of the controversial aspects of health care; America has long had a 'defensive medicine' problem, where in some cases doctors and hospitals run many unnecessary tests to check off the boxes so that if something does go wrong, lawyers won't be shedding tears in court about how the greedy or incompetent medical community ruins lives.

Then in other cases doctors may be running tests with little value because the effect on patients is psychological or it won't be meaningful, such as in cancer screening for the elderly. 

Then there is the issue where it's good business. 

Getting informed consent from desperate people and their families for experimental treatments is quite easy.

Researchers have succeeded in reconstructing the sea ice conditions in the Fram Strait for this critical period at the end of the last glacial and thus in finding a direct connection between changes in sea ice cover and fluctuations in the Gulf Stream.

A nine meter long sediment core served as a window into the past for the geologists. It was drilled on a Fram Strait expedition conducted on the research vessel Maria. S. Merian and has such clearly defined layers that the scientists can read it like a book.