Explosions of plasma in the Sun's atmosphere can reach temperatures of nearly 100,000 °C, much hotter than scientists had expected.The finding is one of several about the region between the solar surface and the uppermost edge of the Sun's atmosphere, or corona, revealed by
Disrupted sleep patterns alter the composition of gut bacteria, leading to metabolic problems.Eran Elinav at the Weizmann Institute of Science in Rehovot, Israel, and his team found that the abundance of gut microbes in mice fluctuates daily in sync with host feeding times. But
Guidance for mitigation action should come from the insights that global mean temperatures respond to cumulative carbon emissions and that there are risks beyond warming alone. Momentum for the negotiations requires a sense of opportunity.
The emerging scientific focus on cumulative carbon emissions may make climate negotiations harder. But, it serves to clarify the scale and scope of climate mitigation needed to meet potential temperature targets.
Jupiter's icy moon Europa is criss-crossed by extensional features. A tectonic reconstruction suggests that Europa's extension is balanced by subduction — if so, Earth may not be the only planetary body with a plate tectonic system.
Fear and avoidance of predators are known to influence how and where herbivore prey species, such as impala, forage. This in turn has cascading effects on plant morphologies and communities. – [Read More]
People think they are in control of their own decisions: what to eat or drink, whom to marry or pick a fight with, where to live, what to buy. Behavioural economists and neurophysiologists have long studied decision-making behaviours. However, these behaviours have only recently been studied through the light of molecular genetics. Here, we review recent res […]
Cholesterol is essential for neuronal physiology, both during development and in the adult life: as a major component of cell membranes and precursor of steroid hormones, it contributes to the regulation of ion permeability, cell shape, cell–cell interaction, and transmembrane signaling. Consistently, hereditary diseases with mutations in cholesterol-related […]
Astrocyte differentiation is essential for late embryonic brain development, and autophagy is active during this process. However, it is unknown whether and how autophagy regulates astrocyte differentiation. Here, we show that Atg5, which is necessary for autophagosome formation, regulates astrocyte differentiation. Atg5 deficiency represses the generation o […]
Wang, S., Li, B., Qiao, H., Lv, X., Liang, Q., Shi, Z., Xia, W., Ji, F., Jiao, J.
How the p53 transcription factor/tumor suppressor inhibits cell invasion is poorly understood. We demonstrate that this function of p53 requires its direct interaction with p21WAF1, a transcriptional target of p53, and that both p21 and p53 bind to Slug, which promotes cell invasion. Functional studies reveal that p21 and p53 cooperate to facilitate Mdm2-dep […]
Kim, J., Bae, S., An, S., Park, J. K., Kim, E. M., Hwang, S.-G., Kim, W.-J., Um, H.-D.
The tactile sensors in our fingers have variable sensitivity across the skin. Does this variability harm or help the CNS in touch perception? Work now shows that this variability may provide the CNS with more information about micropositioning and stimulus orientation.
How do enhancers facilitate transcription of plasticity-related genes in response to synaptic stimulation? A study implicates a specific histone modification and suggests that FOS regulates enhancer function.
Long axonal projections seem to be metabolically coupled to ensheathing glial cells. Targeting LKB1, a regulator of energy homeostasis, specifically in Schwann cells causes a loss of predominantly small unmyelinated fibers.
At Arkive, we are ever grateful for the support we receive from individuals whether they be photographers and filmmakers who donate their work to make Arkive possible, conservationists & researchers who passionately pursue the science and stories behind the world’s most threatened species, or teachers who bring the WILD into their classroom everyday with […]
Wildscreen Photography Festival is THE must-attend event in the wildlife photography calendar. This annual gathering of the world’s very best wildlife and environmental photographers gives you the chance to immerse yourself in the sheer wonder of the natural world. You can discover the stories behind some of the most iconic wildlife images of recent times as […]
This October, Bristol will be hosting a comedy night with a difference! If you’re in the UK, join us for a night of laughter and hilarity at Colston Hall, hosted by Simon Watt (Inside Nature’s Giants, the Infinite Monkey Cage) as we seek to delve deep into some of the weirdest creatures on this earth. […]
What is SINNG? The Student Invasive Non-Native Group or SINNG is a Local Action Group based at Cornwall College, Newquay. Launched in 2010, our goal is to increase awareness and reduce the impacts caused by Invasive Non-Native Species (INNS) on native wildlife. We do this through practical fieldwork such as pond clearings, Himalayan Balsam removal […]