Study links human actions to specific Arctic sea ice melt

U.S. News

The study calculates that for every ton of carbon dioxide put in the air, there's 29 square feet less of sea ice (for every metric ton, there's 3 square meters less) during the crucial month when the Arctic region is least frozen. Using observations, statistics and 30 different computer models, the study authors show heat-trapping gases cause warming and the melting of sea ice in a way that can be translated into a simple mathematical formula.


Colorado Study Upends Assumptions About Human-Bear Conflicts

U.S. News

Colorado officials quickly could end their policy of euthanizing bears in response to the findings, Colorado State University conservation biologist Barry Noon said. However, he said, "the key driver of bear populations is going to be the carrying capacity of the environment. And that is going to be related to soil moisture and plant productivity -- which is directly related to the climate. We will want to be addressing these ultimate factors that are driving wildlife populations."


Second CRISPR human embryo study shows there is a long way to go

New Scientist

A team in China has announced the results of their attempts to modify human embryos using the CRISPR gene-editing technique – the second study of its kind. A team at the Third Affiliated Hospital of Guangzhou Medical University used CRISPR to try to introduce a mutation into human embryos that makes people immune to HIV. This mutation prevents people from making the CCRF receptor that normally lets the HIV virus into a cell. The team say they were trying to evaluate methods of precisely modifying early human embryos. But like the first study to be published on CRISPR editing in human embryos, this HIV work was done on embryos that had been rejected by IVF clinics because they had an extra set of chromosomes.


Second CRISPR human embryo study shows there is a long way to go

New Scientist

A team in China has announced the results of their attempts to modify human embryos using the CRISPR gene-editing technique – the second study of its kind. A team at the Third Affiliated Hospital of Guangzhou Medical University used CRISPR to try to introduce a mutation into human embryos that makes people immune to HIV. This mutation prevents people from making the CCRF receptor that normally lets the HIV virus into a cell. The team say they were trying to evaluate methods of precisely modifying early human embryos. But like the first study to be published on CRISPR editing in human embryos, this HIV work was done on embryos that had been rejected by IVF clinics because they had an extra set of chromosomes.


UCL study finds biodiversity decline could effect human societies devestatingly

Daily Mail

It seems that almost daily we hear about the discovery of a new species, whether it's a silver snake in the Caribbean, or a new tree in the Amazon. Despite these regular discoveries, levels of global biodiversity are on the decline, which scientists say could have a devastating global impact. New research suggests this loss in the variety of species around the world could damage the way ecosystems function and even harm the sustainability of human societies. In particular, the researchers have highlighted that grasslands, savannas and shrublands are more affected by the biodiversity lost. A team from UCL have found that levels of biodiversity loss are so high that if left unchecked, they could undermine efforts towards long-term sustainable development.