SciPod

The black holes found at the centres of most large galaxies are now found to be fundamental to galactic formation and evolution. Until recently, however, little was understood about how these massive bodies affect the behaviours of their host galaxies and beyond. Through their research, Dr Stefi Baum and Dr Christopher O’Dea at the University of Manitoba have made important strides towards untangling the many mysteries involved in this intriguing astronomical problem.

So far, very few research studies have investigated the effects of criminal convictions on the families of defendants. Dr Hong Lu, a Professor of Criminal Justice at University of Nevada, along with her co-authors, Dr Yudu Li and Dr Bin Liang, carried out a study examining how the family of Nian Bin, the defendant in a high-profile capital case in China who received four death sentences, managed the physical, emotional, financial, and legal challenges they faced after their relative’s conviction.

In the United States, public opinions have become increasingly polarised. This polarisation leads to ‘othering’, which describes how one group of people can view another group as very different from themselves and depict them in negative ways. Dr Megan Schraedley at West Chester University recently carried out a study exploring how othering arises in the context of US politics, and how it can be disrupted. Understanding how this destructive phenomenon can be disrupted could help policymakers to successfully introduce important legislation.

Methane is one of the most potent greenhouse gases that contributes to the global climate crisis. As this gas is produced in the digestive systems of cattle, methane represents one of the greatest problems faced by the farming industry. Dr Robert Bryant, Dr Langdon Martin and their team at Warren Wilson College, North Carolina, propose an innovative feed supplement for cattle that helps to significantly reduce methane emissions: waste yeast from craft breweries. If used on a large scale, this new supplement could significantly decrease emissions associated with cattle farming, while also creating a new use for a waste product of the craft beer industry.

Savannas are characterised by the co-existence of two very different types of plants – trees and grasses. They may be open, with large swathes of grass and an occasional tree dotting the landscape, or closed with a near complete cover of trees and a sparse grass layer beneath. In drier parts of the world, drought may play an important role in determining the balance between the trees and grasses in savannas. Extreme droughts, which are likely to become more common with climate change, could permanently shift a closed savanna to an open one. Such changes would have significant consequences for the functioning of these ecosystems and the animals they support. Dr Anthony Swemmer of the South African Environmental Observation Network explored the impact of an unusually severe drought on trees in South Africa. His team’s research shows that the response of trees to drought depends on a suite of local factors.

Propaganda is the systemic use of language with the intent to brainwash rather than to persuade. It has the subtle but pervasive power to ensnare an entire populace toward a predetermined attitude or outlook. Deceptive communication is now commonplace in this information age. Dr Robert L. Walsh recently examined how propagandists bend language for mass deception. He argued that what makes propaganda so insidious is a vestige of our prehistoric past – the Neolithic or Tribal mind.

Software piracy is a large and growing problem. The methods used to combat it are becoming increasingly complex as technology evolves, costing software publishers and users billions of dollars each year. Dr Alan Litchfield from the Auckland University of Technology and Jeff Herbert from Cybercraft, New Zealand, have developed a new method to suppress software piracy. In a recent paper, they present ReSOLV – a method for software validation based on cryptocurrency blockchain technology.

Following exposure to injury or infection, the body elicits a counteractive immune response which involves many different cell types and processes. Cytokines are substances secreted by cells which play a pivotal role in the regulation of this response. Professor Paige Lacy and colleagues in the Department of Medicine at the University of Alberta in Edmonton, Canada, have conducted extensive research into the exact mechanisms underpinning the regulation of cytokine release during the immune response with a particular focus on airway inflammatory disorders.

Human skin acts as an important line of defence against the external environment. To preserve this important function, the regeneration of injured skin is critical. Scientists are now able to artificially replicate aspects of the complex microenvironment in which human skin stem cells reside thanks to the technological advances in the field of biomaterial devices. Dr Ilida Ortega Asencio, from the University of Sheffield, UK, and her team have developed a new approach in which electrospun patches with defined microenvironments can be functionalised with key compounds to aid the formation of new blood vessels in injured skin.

Chemotherapy, one of the mainstays of cancer treatment, can unfortunately act as a double-edged sword. While achieving the intended aim of killing cancerous cells, it also generates an accumulation of cell debris, which in turn, promotes tumour growth by stimulating inflammation in the tumour microenvironment. Dr Dipak Panigrahy and his colleagues from Harvard Medical School, USA, have conducted several studies in mice showing that targeting the tumour cell debris-mediated surge of proinflammatory and protumourigenic factors provides a strategy for enhancing the efficacy of chemotherapy.