Many sharks live a century — longer than thought

Radioactivity from nuclear bombs has helped reveal lengthy lifespans, a new analysis says.

We humans go to great lengths to appear younger than we are. Sharks, it seems, do it naturally.

About a decade ago, studies began to hint that many sharks have longer lifespans than previously suspected. Now, a new analysis that pulled together data from more than 50 studies suggests a “widespread” underestimation of lifespans among many sharks, rays, and cartilaginous fish. Read more. (Explore the interactive: “Sizing Up Sharks, the Lords of the Sea.”“Sizing Up Sharks, the Lords of the Sea.”)

From mountain to sea - studying Taranaki ecosystems

The University of Waikato and George Mason Charitable Trust have joined forces to support in-depth research into Taranaki ecosystems. The plan is to get a coherent approach to research in an often-neglected part of the country.

Deputy Vice-Chancellor Research at the University of Waikato Professor Bruce Clarkson is one of the scientists behind the project to provide scholarships for postgraduate students to study issues in marine and fresh waters and on the land. The Trust is donating $100,000 a year for five years and the university will match that.

Professor Clarkson says the George Mason Trust has long been a supporter of the university, funding scholarships and research projects. "But it’s been in an ad hoc way, so we’ve worked together to design a high-quality integrated model." Read more.

Citing 'enormous' cost difference, Anthem says no to imaging tests at hospitals

Frustrated over the “enormous” price variations among medical providers, Anthem Inc. has said it is no longer allowing patients to receive certain outpatient imaging at hospital-owned facilities.

“We’re seeing differences of like 500 percent,” said Dr. Jay Moore, senior clinical director of Anthem Blue Cross Blue Shield of Missouri.

“It just doesn’t make sense. It’s ridiculous in terms of the amount of cost differential.”

Anthem is pushing patients toward independent facilities when they need high-tech imaging tests such as MRI, CT and PET scans. The policy went into effect July 1. Read more. 

Fukushima Nuclear Disaster Never Affected Canadian Pacific Fish And Human Health

Radioactive contamination following a nuclear power-plant disaster in Japan never reached unsafe levels in the north Pacific Ocean for either marine life or human health, says a British Columbia scientist.

Chemical oceanographer Jay Cullen of the University of Victoria has monitored levels of contamination from radioactive isotopes, used in cancer therapies and medical imaging, since the meltdown of three reactors at the Fukushima Daiichi plant in 2011 following a tsunami triggered by an earthquake. Read more.

Bronze Age Burial Sites Suggest Women Spread Culture More Than Men

We humans are unusual amongst primates: We're bipedal, we have a virtuosic proficiency for language, we're able to understand the mental states of others. Recent studies have also found that the social behavior of the sexes in ancient humans were probably unlike those of what we most often see today in the great apes — in at least some early humans, the males stayed put in one geographic area while females traveled around looking for new mates. Read more.