Do you prefer to own a DVD, rather than wondering if Netflix will remove whatever show you wanted to watch this week? If you buy or rent, rather than streaming, you are contributing to billions of tons of carbon going into the atmosphere.

Photographers like Richard Avedon, Diane Arbus, and Martin Schoeller made their reputations with distinctive visual styles that sometimes required the careful control of lighting possible only in the studio.

2.1 billion people, nearly 30% of the world's population, are overweight, according to a new analysis of data from 188 countries. 

In 1980, the world was still worried about doomsday prophets and a population bomb that would lead to mass starvation, wars over food, and a world government to mandate abortion; instead, agricultural science has grown so much more food that many poor people can afford to eat like royalty and get fat.

Cheap, plentiful food is a win for the world but now we have a major public health epidemic in both the developed and the developing world. 

Circumcision is performed for various reasons, including those that are based on religion, aesthetics, or health, but a paper
in BJU International adds to a growing list of advantages to circumcision; it finds rhat the procedure may help prevent prostate cancer in some men.  

A nationwide survey indicates that heroin users are attracted to heroin not only for the high, but because it is less expensive and easier to get than prescription painkillers.

People sometimes use indoor tanning in the belief that this will prevent burns when they tan outdoors. However, indoor tanning raises the risk of developing melanoma even if a person has never had burns from either indoor or outdoor tanning, according to a study published May 29 in the JNCI: Journal of the National Cancer Institute.

Heroin is popular again, though not for reasons you expect. Gone are the days of desperate junkies in poverty settings. Now it is primarily cheap young urban professionals.

Few studies on the demographics of present day heroin users have compared them to heroin users 40 to 50 years ago. In the 1960s, heroin junkies were primarily young men from minority groups living in urban areas. Theodore J. Cicero, Ph.D., of Washington University, St. Louis, and colleagues analyzed data on nearly 2,800 patients from an ongoing study that used self-reported surveys from patients with a heroin use/dependence diagnosis entering treatment centers and also from patients who completed a more detailed interview (n=54).  

Evidence for massive and abrupt iceberg calving in Antarctica dating back 19,000 to 9,000 years ago is based on an analysis of new, long deep sea sediment cores extracted from the region between the Falkland Islands and the Antarctic Peninsula. 

The study in Nature documents that the Antarctic ice sheet is unstable and can abruptly reorganize Southern Hemisphere climate and cause rapid global sea level rise. 

A mechanism that enables the development of resistance to Acute Myeloid Leukemia (AML) anticancer drugs, thereby leading to relapse, has been identified by Kathy Borden of the University of Montreal's Institute for Research in Immunology and Cancer (IRIC) and her collaborators. Kathy Borden is a Principal Investigator at IRIC and a professor at the university's Department of Pathology and Cell Biology. The development of drug resistance is one of the main problems in clinical oncology and the cause of relapse in many patients.