Category Archives: Biology

Napoleon’s soldiers who died in Russian retreat had unexpected diseases, study finds

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Analysis of DNA from teeth of troops buried in mass grave suggests soldiers had paratyphoid fever and relapsing fever

When Napoleon ordered his army to retreat from Russia in October 1812, disaster ensued. Starving, cold, exhausted and struggling with sickness, an estimated 300,000 soldiers died.

Researchers now say they have identified two unexpected diseases among soldiers who died in the retreat – paratyphoid fever and relapsing fever – which provide fresh insights into their plight.

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Plantwatch: An extraordinary orchid that lives and flowers underground

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Botanist trying to conserve highly vulnerable rhizanthella that survives by feeding on nutrients from a fungus

Rhizanthella is an extraordinary orchid that lives its entire life underground. It flowers below ground, has no leaves and survives by feeding on nutrients from a fungus that gets its food from the soil and by connecting with roots of the broom bush, Melaleuca uncinata.

Rhizanthella was an international sensation when it was first discovered by a farmer ploughing a field in Western Australia in 1928. It still remains incredibly difficult to find, usually by searching areas with the right habitat and carefully scraping away soil searching for the blooms buried underneath – tiny reddish flowers wrapped in creamy-pink bracts. The blooms also have a heady scent of vanilla, and may be pollinated by termites or tiny flies.

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Grisly recording reveals bat catching, killing and eating robin mid-flight

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Before the Spanish study, some scientists had been sceptical about the mammals attacking migratory birds

Bats are generally viewed as harmless, if spooky, creatures of the night. But scientists have revealed a more savage side, after witnessing a greater noctule bat – Europe’s largest bat species – hunting, killing and devouring a robin mid-flight.

The grisly recording reveals the bat as a formidable predator, climbing to 1.2km (4,000ft) before embarking on a breakneck-speed dive in pursuit of its prey. On capture, the bat delivered a lethal bite and subsequent chewing sounds, recorded between echolocation calls, indicated that the bat consumed the bird continuously during flight for 23 minutes without losing altitude.

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Grisly recording reveals bat catching, killing and eating robin mid-flight

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Before the Spanish study, some scientists had been sceptical about the mammals attacking migratory birds

Bats are generally viewed as harmless, if spooky, creatures of the night. But scientists have revealed a more savage side, after witnessing a greater noctule bat – Europe’s largest bat species – hunting, killing and devouring a robin mid-flight.

The grisly recording reveals the bat as a formidable predator, climbing to 1.2km (4,000ft) before embarking on a breakneck-speed dive in pursuit of its prey. On capture, the bat delivered a lethal bite and subsequent chewing sounds, recorded between echolocation calls, indicated that the bat consumed the bird continuously during flight for 23 minutes without losing altitude.

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Huntington’s disease treated successfully for first time in UK gene therapy trial

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Surgical procedure to treat devastating illness slowed progress of disease by 75% in patients after three years

Huntington’s disease, a devastating degenerative illness that runs in families, has been treated successfully for the first time in a breakthrough gene therapy trial.

The disease, caused by a single gene defect, steadily kills brain cells leading to dementia, paralysis and ultimately death. Those with a parent with Huntington’s have a 50% chance of developing the disease, which until now has been incurable.

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Kenya’s Turkana people genetically adapted to live in harsh environment, study suggests

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Research which began with conversations round a campfire and went on to examine 7m gene variants shows how people survive with little water and a meat-rich diet

A collaboration between African and American researchers and a community living in one of the most hostile landscapes of northern Kenya has uncovered key genetic adaptations that explain how pastoralist people have been able to thrive in the region.

Underlying the population’s abilities to live in Turkana, a place defined by extreme heat, water scarcity and limited vegetation, has been hundreds of years of natural selection, according to a study published in Science.

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Scientists capture first footage of human embryo implanting in a uterus

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Groundbreaking footage shows ‘surprisingly invasive’ process and may help to improve infertility treatments

A human embryo being implanted into a uterus has been pictured in real time and in 3D footage for the first time by a team of scientists.

It shows images of an embryo implanting into a synthetic uterus, demonstrating how the process occurs naturally.

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Skeleton found in pot is first ancient Egyptian to undergo whole genome analysis

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Unusual burial of man, thought to have been a potter, in sealed vessel may have helped DNA survive past four millennia

A man whose bones were shaped by a lifetime of hard labour more than 4,500 years ago has become the first ancient Egyptian to have his entire genetic code read and analysed by scientists.

The skeleton of the man, who lived at the dawn of the Age of the Pyramids, was recovered in 1902 from a sealed pottery vessel in a rock-cut tomb in Nuwayrat, 165 miles south of Cairo, and has been held in a museum since.

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Wild chimpanzees filmed by scientists bonding over alcoholic fruit

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Footage of apes consuming fermented breadfruit leads researchers to ask if it may shed light on origins of human feasting

Humans have gathered to feast and enjoy a tipple together for thousands of years, but research suggests chimpanzees may also bond over a boozy treat.

Wild chimpanzees in west Africa have been observed sharing fruit containing alcohol – not in quantities to get roaring drunk but, possibly, enough for a fuzzy beer buzz feeling.

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Australian scientists produce kangaroo embryos using IVF for first time

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Team has produced more than 20 embryos using method used in humans, though there are no plans for live joeys

Scientists have produced kangaroo embryos through in vitro fertilisation for the first time, in a development they say could help conservation of endangered animals.

Australian researchers at the University of Queensland made the eastern grey kangaroo embryos using intracytoplasmic sperm injection (ICSI), a technique widely used in human IVF, in which a sperm is injected into a mature egg.

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Study of more than 600 animal and plant species finds genetic diversity has declined globally

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Analysis by dozens of scientists internationally notes urgent conservation efforts could halt or even reverse losses

Genetic diversity in animals and plants has declined globally over the past three decades, an analysis of more than 600 species has found.

The research, published in the journal Nature, found declines in two-thirds of the populations studied, but noted that urgent conservation efforts could halt or even reverse genetic diversity losses.

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Scientists of potato blight pathogen?

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Researchers say study may help global efforts in controlling disease that still destroys crops today

It was a disaster that killed about 1 million people, devastating 19th century Ireland, but while the potato disease linked to the Irish famine is well known, a battle has raged over where it originated.

Scientists have long been divided over whether the fungus-like pathogen Phtytophthora infestans cropped up in the Andes or originated in Mexico.

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Colombian tree frog found by Sheffield florist highlights invasive species threat

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Scientists say frog’s journey shows difficulty of spotting insects or fungi spread by global plant trade

A tiny tree frog hitchhiking in a bunch of roses to Sheffield from Colombia has inspired a study into invasive species reaching the UK’s shores.

Dr Silviu Petrovan, a researcher in the University of Cambridge’s zoology department and a senior author of a paper published today in the journal BioScience, had his interest piqued when he was asked to identify a live frog found in roses in a florist’s shop in Sheffield.

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Footprints in Kenya ‘show distant relatives of modern humans coexisted’

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Researchers say fossilised marks were apparently made in same place within days of each other about 1.5m years ago

About 1.5m years ago a big-toothed cousin of prehistoric humans walked quickly along a lakeside in Kenya, footprints marking the muddy ground. But they were not our only distant relative on the scene: treading the same ground was the early human Homo erectus.

Researchers say an analysis of fossilised footprints discovered in deposits of the Turkana Basin, northern Kenya, suggest the marks were made by two different species on the human family tree who were in the same place within hours or days of each other.

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Elephants can wash with a hose – and sabotage shower time, scientists say

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An elephant at Berlin zoo used its trunk to interrupt flow of water from hose used by another elephant

If you get frustrated by the shower hog in your house you’re not alone: research suggests such behaviour might even irritate elephants.

Scientists say they have not only discovered an elephant with an astonishing ability to shower with a hose, but spotted another cutting off the flow of water – possibly in a deliberate act of sabotage.

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Scientists discover oldest ever giant tadpole fossil in Argentina

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Tadpole that wriggled around 160m years ago surpasses previous record holder by about 20m years

Scientists have discovered the oldest-known fossil of a giant tadpole that wriggled around over 160m years ago.

The new fossil, found in Argentina, surpasses the previous ancient record holder by about 20m years.

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‘Bodies were dropped down quarry shafts’: secrets of millions buried in Paris catacombs come to light

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Researchers hope to uncover how people died and how diseases have developed over 1,000 years

Deep beneath the streets of Paris, the dead are having their last word. They are recounting 1,000 years of death in the city: how many are ­buried in the labyrinth of tunnels that make up Les Catacombes, what killed them and how the diseases that may have led to their demise have ­developed over the centuries.

In the first ever scientific study of the site, a team of archeologists, anthropologists, biologists and ­doctors is examining some of the skeletons of an estimated 5-6 ­million people whose bones were literally dumped down quarry shafts at the end of the 18th century and beginning of the 19th.

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Fungi could be given same status as flora and fauna under conservation plan

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Exclusive: proposal to Cop16 could see ‘funga’ get global legal consideration distinct from flora and fauna

A new era of mycelial conservation could begin this month when the UK and Chile propose that fungi should be placed alongside animals and plants as a separate realm for environmental protection.

Mushrooms, mould, mildew, yeast and lichen would all receive elevated status under the plan, which will be submitted to the UN convention on biological diversity (CBD) during the Cop16 meeting in Cali, Colombia, which opens on 21 October.

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Scientists create surgical stitch to aid healing by electrical stimulation

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Researchers in China say their suture can speed up wound healing and reduce risk of infection by producing a charge

The humble stitch plays a crucial role in surgery, holding a gash together while tissues repair. Now scientists have created a type of suture they say can help speed up wound healing and reduce the risk of infection.

Researchers in China have created a suture that when put under strain – as occurs during movement – electrically stimulates the wound.

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Healthier rice variety could counter rise in diabetes, Philippine scientists say

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Researchers develop grain with lower glycaemic index and more protein that ‘could have big impact in Asia and Africa’

Scientists in the Philippines have created a new variety of rice that could help reduce the growing burden of diabetes.

More than 537 million adults worldwide are living with the chronic disease – a number that is expected to grow to 783 million by 2045. Being overweight, genetics and a lack of exercise contribute to type 2 diabetes, which is the most common form. Type 2 occurs when the pancreas fails to produce enough of the insulin hormone, leaving too much glucose in the blood, and cells develop a resistance to insulin.

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