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Temporal metamaterials, which can manipulate and rewind waves, are being used to test fundamental ideas in physics. These materials can change their properties rapidly, creating a boundary that acts as a mirror in time. Researchers have been able to manipulate acoustic and electromagnetic waves using temporal metamaterials, and these materials have practical applications in various industries. They also offer new ways to test the behavior of light and explore concepts like quantum friction and the special theory of relativity. However, understanding the effects of time boundaries in these materials presents a challenge for physicists. [Extracted from the article]

OCTOPUSES can adapt to changes in temperature by tweaking their genetic code to alter the proteins that are made in their nerve cells. However, most edits take place in non-coding RNA - that is, RNA that isn't translated into a protein. [Extracted from the article]

Next, the researchers applied different magnetic fields to the graphene to measure how its magnetoresistance changed. This is partly down to graphene's electrons and holes being highly mobile and therefore sensitive to tiny changes in an external magnetic field, the researchers write in their paper. Its unparalleled ability to increase or decrease its electrical resistance in response to a magnetic field could one day have applications for how we store data. [Extracted from the article]

The woman, known as the New York patient, has been clear of detectable HIV since 2017, after she received HIV-resistant stem cells - which can turn into different types of blood cell - that had been harvested from umbilical cord blood to treat her leukaemia. RECEIVING a transplant of stem cells from umbilical cord blood has caused a mixed-race woman to go into remission for HIV for the first time. [Extracted from the article]

RADIOACTIVE meteorites may have helped create key chemicals for life a few million years after the solar system was formed. Exactly how these amino acids could be created in meteorites has remained a mystery, but now Yoko Kebukawa at Yokohama National University in Japan and her team have shown that some could have been synthesised by chemical reactions driven by gamma rays. [Extracted from the article]

If the original bombarding asteroids were just 10 per cent water, the lower limit for C-type meteorites, they would have deposited enough of it to create a global ocean (illustrated above), say the researchers. Solar system THE space rocks that bombarded Mars during the early days of the inner solar system may have carried enough water to create a 300-metre-deep ocean there. [Extracted from the article]

That added up to a total of 50 grams of oxygen in total - which would be about 100 minutes' worth of breathable oxygen for a single astronaut ( I Science Advances i , doi.org/gqqzpr). NASA's attempt to produce oxygen on Mars managed to generate about 100 minutes' worth of breathable oxygen in 2021. [Extracted from the article]