Monitoring the movements of sharks can help researchers to advise on the areas best served by marine reserves.In the Seychelles in the Indian Ocean, a proposed marine protected area has been designed to safeguard mainly turtles and coral reefs. To see how well it
By measuring concentrations of stable isotopes in bomb debris, researchers have worked out the details of a nuclear test performed 70 years ago.Scientists have long debated the efficiency and yield of the first atomic bomb, called Trinity, which was detonated in 1945 in New
The ocean overturning circulation is potentially sensitive to climate change. In the north and south alike, human influence is less pronounced than we thought, but that is no reason to relax our watchfulness.
After more than a decade exploring Saturn and its moons, the Cassini mission is in its closing act. Cassini's last year is an encore performance stuffed with science, including a final plunge into Saturn's atmosphere.
Ethane emissions can lead to ozone pollution. Measurements at 49 sites show that long-declining atmospheric ethane concentrations started rising in 2010 in the Northern Hemisphere, largely due to greater oil and gas production in the USA.
Anomalously bright spots are seen on the dark cratered surface of the dwarf planet Ceres. The Dawn spacecraft's detection of sodium carbonates in bright areas is consistent with aqueous activity in an ice-poor and salty regolith.
Soil carbon stocks depend on inputs from decomposing vegetation and return to the atmosphere as CO2. Monitoring of carbon stocks in German alpine soils has shown large losses linked to climate change and a possible positive feedback loop.
Telomeres are transcribed in long noncoding RNA named TERRA. Although TERRA functions have been extensively investigated, the role of TERRA in telomerase recruitment and regulation is still elusive. In this issue of EMBO Reports, Moravec et al report in Schizosaccharomyces pombe that telomere shortening induces the expression of TERRA . They show that pol […]
Mitochondria are essential organelles for cell survival, programmed cell death, and autophagy. They undergo cycles of fission and fusion, which are subverted by infectious pathogens and altered in many human diseases. Mitochondrial fission is mediated by the dynamin-related protein Drp1, but the precise mechanism of its action is not well understood. In the […]
Injured mouse retinal ganglion cells, upon a combination of treatments, can regrow their axons along the entire optic pathway and re-establish connections with their correct brain targets. This can partially restore function.
Orientation selectivity in visual cortex is not simply the result of linear input summation. Instead, selectivity is enhanced by nonlinear dendritic transformation of spatially clustered, cotuned synaptic inputs.
In the twenty-first century, microglia came of age. Their remarkable ontogeny, unique functions and gene expression profile, process motility, and disease relevance have all been highlighted. Neuroscientists interested in microglia encounter an obsolete concept, M1/M2 polarization, suggesting experimental strategies that produce neither conceptual nor techni […]
Most pollinator-plant relationships follow the same trend – animal lands on plant, gets covered in pollen which it then transfers onto another plant of the same species – but there are many plants that go against the norm, and have a weird and wonderful method of ensuring that their pollen gets to where it needs […]
As it’s #SharkWeek we thought we’d have a browse through Arkive and select our top 10 shark images and share them with you! 1) Say cheese! What shark list would be complete without the magnificent great white shark? Here pictured giving the photographer Ralf Kiekner a nice, big, cheesy grin. 2) Gentle giant Despite being […]
Filmmakers Jennene and Dave Riggs have been filming and editing wildlife documentaries for over 17 years, and have worked with a vast array of species in their careers, from dangerous sharks, orcas and crocodiles to gentle dugongs and bandicoots. The pair are currently working on a new documentary about one of the most endangered bird species […]
The Whitley Fund for Nature holds an annual ceremony where pioneering conservationists around the world are honoured with an award recognising their achievement and given £35,000 (US$50,350) to continue their projects. We were lucky enough to be invited along to the ceremony to meet the finalists and find out more about their work. Each day […]