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Genes remain active after death

Genes remain active after death

Image copyright PETER MENZEL/SCIENCE PHOTO LIBRARY Image caption Transcriptomics might one day help forensic scientists predict time of death Cells continue to function even after an individual dies. That’s according to a scientific study published in Nature Communications. Analysing post-mortem samples, an international team of scientists showed that some genes became more active after death. […]

Amazon fish challenges mutation idea

Amazon fish challenges mutation idea

Image copyright Reuters Image caption The Amazon molly is thought to be a hybrid of two different species Evolutionary theory suggests that species favouring asexual reproduction will rapidly become extinct, as their genomes accumulate deadly mutations over time. But a study on an Amazon fish has cast doubt on the rapidity of this decline. Despite […]

UK team set for giant Antarctic iceberg expedition

UK team set for giant Antarctic iceberg expedition

Image copyright BAS Image caption The marine life exposed by the iceberg may have been hidden beneath the ice shelf for 120,000 years Scientists will set out in the next week to study an Antarctic realm that has been hidden for thousands of years. A British Antarctic Survey-led team will explore the seabed ecosystem exposed […]

New crayfish that doesn’t need males to mate becomes all-powerful

New crayfish that doesn’t need males to mate becomes all-powerful

Image copyright Kijiji Image caption Invasive marbled crayfish are sold on Canadian online adverts for as little as C$0.50 (£0.28) A new species of all-female crayfish able to reproduce without males is multiplying rapidly and invading ecosystems across the world. A new study found that the marbled crayfish is descended from a single female with […]

‘Oumuamua: ‘space cigar’s’ tumble hints at violent past

‘Oumuamua: ‘space cigar’s’ tumble hints at violent past

Image caption Artwork: The way ‘Oumuamua tumbles suggests it was involved in a collision The space interloper ‘Oumuamua is spinning chaotically and will carry on doing so for more than a billion years. That is the conclusion of new Belfast research that has examined in detail the light bouncing off the cigar-shaped asteroid from outside […]

Bolivia’s lonely frog: Scientists race to find mate for Romeo

Bolivia’s lonely frog: Scientists race to find mate for Romeo

Image copyright AFP Image caption Romeo lives in the Cochabamba Natural History Museum and there may only be five years left to save his species Conservationists in Bolivia are scouring the country to find a mate for a childless frog who they fear may be the last of his species. Romeo, a 10-year-old Sehuencas water […]

Asteroid set for ‘close’ 43,300 mile flight past Earth on Friday

Asteroid set for ‘close’ 43,300 mile flight past Earth on Friday

Image copyright NASA Image caption File artwork: The asteroid will pass safely by the Earth on Friday evening (GMT) An asteroid up to 40m in size and only discovered five days ago, is due to skim past the Earth on Friday. Asteroid 2018 CB will pass by at just less than one-fifth the distance between […]

Secrets of solar flares are unlocked

Secrets of solar flares are unlocked

Image copyright NASA Image caption Magnetic flux ropes (shown right) are at the heart of eruptions from the Sun Scientists may finally understand the mechanism behind solar flares. Flares can occur on their own, or be accompanied by powerful eruptions of plasma (charged gas) from the Sun. If charged particles from these eruptions reach Earth, […]

DNA story of when life first gave us lemons

DNA story of when life first gave us lemons

Image copyright Getty Images Image caption Oranges are the result of thousands of years of human selection All citrus fruits can trace their roots to the southeast foothills of the Himalayas, according to DNA evidence. The first citrus trees appeared about eight million years ago, before spreading around the world, say international scientists. The trees […]

Plastic waste ‘building up’ in Arctic

Plastic waste ‘building up’ in Arctic

Image copyright Geir Wing Gabrielsen Image caption Plastic waste has been found everywhere that researchers have looked for it Plastic waste is building up in the supposedly pristine wilderness of the Norwegian Arctic, scientists say. Researchers are particularly concerned about huge concentrations of microplastic fragments in sea ice. They say they’ve found plastic litter almost […]

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