137 articles from TUESDAY 14.9.2021

What lies beneath: Volcanic secrets revealed

Lava samples have revealed a new truth about the geological makeup of the Earth's crust and could have implications for volcanic eruption early warning systems, a University of Queensland-led study has found.

To colonize different environments, bacteria precisely tune their nanomotors

In their roughly 3.5 billion years on Earth, bacteria have fine-tuned the art of colonizing all kinds of habitats, from the inner lining of digestive tracts to the blistering hot waters of geysers. But in their quest for world domination, bacteria face a critical snag when moving across diverse environments—preserving their navigational apparatus.

Researchers discover hormonal regulatory module for root elongation

In future, agricultural crop production will have to manage with less and less nitrogen fertilization. The goal must therefore be to increase nitrogen use efficiency so that yield levels can be kept stable. Plants respond to mild nitrogen deficiency by elongating their lateral roots. In this way, more nitrogen can be absorbed than before. Researchers at the IPK Leibniz Institute have now...

Researchers discover hormonal regulatory module for root elongation

Plants respond to mild nitrogen deficiency by elongating their lateral roots. In this way, more nitrogen can be absorbed than before. Researchers have now discovered a hormonal regulatory module that mediates the molecular processes of this adaptation. Brassinosteroids and auxins play a central role in this.

Researchers calculate the cost of restoring Australia's degraded ecosystems

The health and diversity of Australian ecosystems are in decline. The environment is under mounting pressure from land clearing, altered fire regimes and invasive species. Australian ecosystems are also extremely vulnerable to climate impacts with extreme temperatures and fires expected to become more frequent and more severe.

Scientists create winning microscopic images

The natural world served as the inspiration for the Ohio State University scientists whose microscope images were announced Monday (Sept. 13) among the top 20 winners in the 2021 Nikon Small World Photomicrography Competition.

Antibacterial nanozymes: Healing chronic wounds with nanochemistry

Chronic infected wounds are often highly problematic for diabetic patients. However, a team of Chinese researchers has now developed a targeted approach to wound healing that makes use of nanomedicine, and their research has been published in the journal Angewandte Chemie. The researchers were able to deactivate wound-infecting bacteria using a solution of nanocapsules that alter the wound...

Hard single-molecule magnets: Tetranuclear rare earth metal complexes with giant spin

Magnets formed from a single molecule are of particular interest in data storage, since the ability to store a bit on every molecule could vastly increase the storage capacity of computers. Researchers have now developed a new molecular system with a particular magnetic hardness. The ingredients in this special recipe are rare earth metals and an unusual nitrogen-based molecular bridge, as shown...

Concentration of microparticles in lakes reflect nearby human activity and land use

Predicting where anthropogenic debris accumulates in aquatic ecosystems is necessary for its control and environmental remediation, but plastic and fiber pollution in lakes is not well studied. A study published in PLOS Biology by Andrew Tanentzap at University of Cambridge, United Kingdom and colleagues suggests that microparticle concentrations in lakes are higher than previously reported, and...

New report on the importance and vulnerability of a critical nursery habitat for BC salmon

A new report on the value and vulnerability of juvenile salmon habitat in northern BC's Skeena River reveals how climate change and development are critically impacting the region—and provides a historical assessment to help inform the region's future planning. Collaborators from the Lax Kw'alaams Fisheries Program, the Skeena Fisheries Commission and Simon Fraser University say proactive...

Hand and footprint art dates to mid-Ice Age

An international collaboration has identified what may be the oldest work of art, a sequence of hand and footprints discovered on the Tibetan Plateau. The prints date back to the middle of the Pleistocene era, between 169,000 and 226,000 years ago – three to four times older than the famed cave paintings in Indonesia, France and Spain.

Boris Johnson says he will not rule out ‘plan B’ of vaccine passports, masks and homeworking – as it happened

Prime minister sets out more details of government winter plans after announcement of ‘plan A’ booster jabsBring in measures soon or risk 7,000 daily hospitalisations, Sage warnsVallance advises PM to ‘go early’ if new Covid restrictions neededSummary of Boris Johnson’s press conferenceMandatory masks could return this winter, says Sajid JavidNightclubs urged to make contingency plans...