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One-winged angel

Marty Weintraub, from Duluth, Minnesota An aurora arcs over a fjord on the Norwegian island of Senja, roughly 3° north of the Arctic Circle, lighting up the villages of Bergsbotn and Indregård. This 1.6-second exposure was taken with a Sony a7 IV mirrorless camera and a 14 mm lens at f/1.8 and ISO 2500. The post One-winged angel appeared first on Astronomy...

Is food waste the key to sustainable, plastic-free diapers and sanitary pads?

Once thrown away, disposable items such as diapers and sanitary pads can take hundreds of years to decompose, because their absorbent parts and waterproof layers contain plastics and other synthetic polymers. But now, researchers are replacing these materials with porous components made from protein biomass that is often discarded by the food and agricultural industries. These components are...

Molecular crystal motors move like microbes when exposed to light

At first glance, Rabih O. Al-Kaysi's molecular motors look like the microscopic worms you'd see in a drop of pond water. But these wriggling ribbons are not alive; they're devices made from crystallized molecules that perform coordinated movements when exposed to light. With continued development, Al-Kaysi and colleagues say, their tiny machines could be used by physicians as drug-delivery robots...

Should forests have rights? – podcast

A growing movement of ecologists, lawyers and artists is arguing that nature should have legal rights. By recognising the rights of ecosystems and other species, advocates hope that they can gain better protection. Madeleine Finlay speaks to the Guardian’s global environment editor, Jonathan Watts, about where this movement has come from and why the UK government has dismissed the concept, and...

US and Japan push for ban on nuclear weapons in space with UN security council resolution

UN chief António Guterres says risk of nuclear war has escalated and that ‘humanity cannot survive a sequel to Oppenheimer’The US and Japan are sponsoring a UN security council resolution calling on all nations not to deploy or develop nuclear weapons in space, the US ambassador has announced.Linda Thomas-Greenfield told a UN security council meeting that “any placement of nuclear weapons...


MONDAY 18. MARCH 2024


NASA’s x-ray telescope faces a long goodbye

The end is nigh for NASA’s nearly 25-year-old Chandra X-ray Observatory. Funding for the space telescope was slashed last week in President Joe Biden’s budget request, which calls for winding the mission down over several years. Astronomers are up in arms over the announcement. They argue that the telescope is as productive as ever and remains a cornerstone of U.S....

Cacao plants' defense against toxic cadmium unveiled

Researchers from the University Grenoble Alpes (UGA), France, together with the ESRF, the European Synchrotron located in Grenoble, France, used ESRF's bright X-rays to unveil how cacao trees protect themselves from toxic metal cadmium. This knowledge is relevant as new EU regulations restrict cadmium concentration in chocolate. Their results are published in Environmental and Experimental Botany.