Earth
Like any other plant, Arabidopsis thaliana or mouse-ear cress, needs nitrogen to survive and thrive. But, like maize, beans and sugar beet, it prefers nitrogen in the form of nitrate, growing better on nitrate rich soil. Whereas, pine and rice for example preferentially grow on ammonium nutrition, another form of the key macronutrient nitrogen. If the concentration or the availability of the different forms of nitrogen fluctuate, plants have to adapt quickly. "One of the most important questions is, what is the role of plant hormones in adaptation to the nitrogen availability?
University of Miami Miller School of Medicine researchers led a unique and groundbreaking randomized controlled trial showing umbilical cord derived mesenchymal stem cell infusions safely reduce risk of death and quicken time to recovery for the severest COVID-19 patients, according to results published in STEM CELLS Translational Medicine in January 2021.
PULLMAN, Wash. - In what may be a sign of climate-change-induced conflict, researchers have captured rare photographic evidence of a jaguar killing another predatory wild cat at an isolated waterhole in Guatemala.
In the footage, a male jaguar arrives near the waterhole and apparently lies in wait for an hour. It lets a potentially dangerous prey animal, a large tapir, pass by, but when the ocelot stops to drink, the jaguar pounces and carries off the smaller predator.
Researchers from Tokyo Medical and Dental University (TMDU) and Ionis Pharmaceuticals, USA, report a modification wherein replacing the RNA strand of a heteroduplex oligonucleotide with DNA may enhance the efficacy of antisense oligonucleotide-based drugs
While glass is a truly ubiquitous material that we use on a daily basis, it also represents a major scientific conundrum. Contrary to what one might expect, the true nature of glass remains something of a mystery, with scientific inquiry into its chemical and physical properties still underway.
A recent study by prof. Tone Bjørge, University of Bergen, and her team shows that thyroid cancer is related to in-utero exposures.
Thyroid cancer is diagnosed at a younger age than most other malignancies and the incidence is higher in women than men.
"The only established modifiable risk factors for thyroid cancer are childhood exposure to ionizing radiation and obesity. Few in-utero and early life risk factors have so far been identified" says Bjørge, professor at Department of Global Public Health and Primary Care, University of Bergen.
New Columbia Engineering study--first to investigate the long-term effect of soil moisture-atmosphere feedbacks in drylands--finds that soil moisture exerts a negative feedback on surface water availability in drylands, offsetting some of the expected decline
Real-life applications like magnetometry or quantum gyroscope typically involve precise measurement on multiple parameters. How to achieve the ultimate precision limits simultaneously is a long sought-after grail in the field.
It is widely believed that the ultimate precision limits for all parameters cannot be achieved simultaneously, since generators of different parameters are generally non-commuting, which induces the trade-offs among the precisions.
Research from the University of Kent's Durrell Institute of Conservation and Ecology (DICE) has found that elephant ivory is still being sold on the online marketplace eBay, despite its 10-year-old policy banning the trade in ivory.
The trafficking of wildlife over the internet continues to be a problem, with the detection of illegal activity being challenging. Despite efforts of law enforcement, the demand for illegal wildlife products online has continued to increase. In some cases vendors have adopted the use of 'code words' to disguise the sale of illicit items.
CHAMPAIGN, Ill. -- Cities only occupy about 3% of the Earth's total land surface, but they bear the burden of the human-perceived effects of global climate change, researchers said. Global climate models are set up for big-picture analysis, leaving urban areas poorly represented. In a new study, researchers take a closer look at how climate change affects cities by using data-driven statistical models combined with traditional process-driven physical climate models.
PROVIDENCE, R.I. [Brown University] -- Sea ice is a critical indicator of changes in the Earth's climate. A new discovery by Brown University researchers could provide scientists a new way to reconstruct sea ice abundance and distribution information from the ancient past, which could aid in understanding human-induced climate change happening now.
HOUSTON -- Researchers at The University of Texas MD Anderson Cancer Center have discovered that a protein called NF-kappa B-inducing kinase (NIK) is essential for the shift in metabolic activity that occurs with T cell activation, making it a critical factor in regulating the anti-tumor immune response.
The preclinical research, published today in Nature Immunology, suggests that elevating NIK activity in T cells may be a promising strategy to enhance the effectiveness of immunotherapy, including adoptive cellular therapies and immune checkpoint blockade.
A sugar-binding protein could fuel terrible inflammation and worsen sepsis, a disease that kills more than 270,000 people every year in the US alone, reports a team of researchers led by UConn Health in the 4 January issue of Nature Immunology.
Sepsis is caused mostly by bacterial infections. The immune system runs out of controls and triggers a cytokine storm, a condition in which inflammation-causing proteins flood the blood. Organs may break down, and death often follows.
If you type into a search engine - "why do men have to wait before having sex again?" - you will very quickly come across Prolactin. This little hormone is thought to be involved in hundreds of physiological processes in the body. Among them is the male post-ejaculatory refractory period. This period begins when a male ejaculates and ends when he recovers his sexual capacity.
By Karina Ninni | Agência FAPESP – Treatment of depression faces two main challenges. The first is that almost 50% of patients do not respond well to existing antidepressants. The second is that conventional medications take a relatively long time – around three to five weeks – to have the desired effect. A group of researchers affiliated with the University of São Paulo (USP) in Brazil set out to tackle the second problem by using epigenetic modulators to try to “erase” the consequences of stress.