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Only six of the previous Winter Olympics host cities will be cold enough to reliably host the Games by the end of this century if global warming projections prove accurate.

Even with conservative climate projections, only 11 of the previous 19 sites could host the Games in the coming decades, according to a new study from the University of Waterloo (Canada) and Management Center Innsbruck (Austria).

As mating season approaches, male animals are faced with a question that can make or break their chances at reproducing: does it pay to be a lover or a fighter? Or both?

Researchers from The University of Manchester and Syracuse University in New York working with the University of Western Australia, found that where animals fall on the lover/fighter scale depends on how much they are able to ensure continued mating rights with females.

Surveillance minimisation - where surveillance is the exception, not the rule - could help rebuild public trust following revelations about the collection of personal data, according to a law academic from the University of East Anglia (UEA).

Dr Paul Bernal, whose research covers privacy, surveillance and human rights, says the role of government surveillance and of surveillance by commercial groups and others must be reconsidered.

The risk of future long term disability to the child should "weigh heavily" in decisions about whether to give birth at home or in hospital, argue leading ethicists in the Journal of Medical Ethics.

Women should, of course, be free to choose where they want to give birth, insist Oxford University ethicist Professor Julian Savulescu and obstetrician and gynaecologist Associate Professor Lachlan de Crespigny of the University of Melbourne.

Hormone replacement therapy (HRT) taken regularly for six months after a knee or hip replacement seems to cut the risk of repeat surgery by around 40%, indicates a large population based study published online in the Annals of the Rheumatic Diseases.

National data for England and Wales indicate that more than 2% of procedures typically have to be repeated within three years, primarily because of osteolysis (75% of cases).

At least three pigment cell types from multiple layers of skin contribute to the color patterns of male guppies, according to a study published in PLOS ONE on January 22, 2014 by Verena Kottler from the Max Planck Institute for Developmental Biology and colleagues.

A major trial aiming to cut the rate of tuberculosis (TB) among South Africa's gold miners did not reduce the number of cases or deaths from the disease, according to a study published in the New England Journal of Medicine.

SEATTLE – Slow-growing, or indolent, non-Hodgkin lymphomas are difficult to treat, with most patients relapsing repeatedly and the disease becoming increasingly resistant to therapy over time.

But a new drug made by Seattle-based Gilead Sciences Inc. appears to offer hope for fighting the disease, according to a study published online today in the New England Journal of Medicine in advance of its March 13 print issue.

EAST LANSING, Mich. — Using a smartphone to cram in more work at night results in less work the next day, indicates new research co-authored by a Michigan State University business scholar.

In a pair of studies surveying a broad spectrum of U.S. workers, Russell Johnson and colleagues found that people who monitored their smart phones for business purposes after 9 p.m. were more tired and were less engaged the following day on the job.

A new study conservatively estimates that one in five women with ovarian cancer has inherited genetic mutations that increase the risk of the disease, according to research at Washington University School of Medicine in St. Louis.

Most women in the study would have been unaware of a genetic predisposition to ovarian cancer because they didn't have strong family histories that suggested it.

One quarter of the world's cartilaginous fish, namely sharks and rays, face extinction within the next few decades, according to the first study to systematically and globally assess their fate.

The International Union for Conservation of Nature's (IUCN's) Shark Specialist Group (SSG), co-chaired by Nick Dulvy, a Simon Fraser University (SFU) Canada Research Chair in Marine Biodiversity and Conservation in British Columbia, conducted the study.

It was published in eLife journal today.

NEWTOWN SQUARE, Penn., Jan. 22, 2014 – Despite the accumulating destruction of a non-native invasive insect called the hemlock woolly adelgid, hemlock forests in the eastern United States appear to have held their own for now, according to new research by the U.S. Forest Service.

The key word is "appear," said Talbot Trotter, the study's lead author and a research ecologist with the U.S. Forest Service's Northern Research Station.

DURHAM, N.C. -- Children around the world who grow up in dangerous neighborhoods exhibit more aggressive behavior, says a new Duke University-led study that is the first to examine the topic across a wide range of countries.

COLUMBIA, Mo. – Professional athletes in the National Basketball Association and Major League Baseball can reap very large financial rewards, especially if their performance peaks during their "contract year," or the last season before an athlete signs a new contract or becomes a free agent. Often, when these athletes perform well during the contract year, they receive huge raises and added benefits. Thus, sports pundits have long discussed a possible "contract year effect," where player performance artificially tops out during contract years.

Watch Prof. Tadelis talk about his research: https://www.youtube.com/watch?v=rneZwbvvmcg&feature=youtu.be