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Tag: "man" at biology news

Corals -- More complex than you?

...w many of the genes involved in innate immunity in man are present in coral ?and just how similar they are." The significance of this may lie in the fact that scientists now suspect coral is facing a number of pandemics: ‘black band? ‘white plague? ‘white pox?‘white syndrome?and ‘white band?are the na...

Sleep quantity affects morning testosterone levels in older men

...differences in the amount of sleep a healthy older man gets can affect his level of testosterone in the morning, according to a study published in the April 1st issue of the journal SLEEP. The study, conducted by Plamen Penev, MD, PhD, of the University of Chicago, focused on 12 healthy men between the ...

Tracking sperm whales and jumbo squid

...es find their food above water, and may be seen by man in the act of feeding, the spermaceti whale obtains his whole food in unknown zones below the surface; and only by inference is it that any one can tell of what, precisely, that food consists." The sperm whale remains a challenging research subjec...

Prehistoric origins of stomach ulcers uncovered

...present in the human digestive system since modern man migrated from Africa over 60,000 years ago. The research, published online today (7 February) by the journal Nature, not only furthers our understanding of a disease causing bacteria but also offers a new way to study the migration and diversificatio...

World's largest flower evolved from family of much tinier blooms

...arable evolutionary growth, Davis says, an average man would end up some 146 meters tall, roughly the height of the Great Pyramid of Giza. Because rafflesia lacks the genes most commonly used to trace plant ancestry, the scientists delved deeper into the genome, looking at some 11,500 base pairs of DNA...

Out of Africa -- Bacteria, as well

When man made his way out of Africa some 60,000 years ago t...h causes gastritis in many people today. Together, man and the bacterium spread throughout the entire world. This is the conclusion reached by an internati...

No-scalpel vasectomies by skilled surgeons may speed recovery

..., which carries sperm from the testicles, leaves a man infertile. Instead of making an incision, the no-scalpel technique uses a sharp instrument to puncture the skin. Advantages of puncturing rather than cutting the skin of the scrotum include less bleeding, bruising, infection and pain. Also, the p...

Sunshine pill for prostate cancer in 2009

...of cancer death in men. Prostate cancer kills one man every hour in the UK....

Human preference for other species could determine whether they survive

... neck and head. He likened the effect to that of a man in a tuxedo pinning on a red carnation. Unlike some other types of animals, human preference for particular penguin species does not seem to be driven by a "cuteness" factor. The four books Stokes examined were published in the last decade and we...

Male contraception: One door opens, another closes

... of surprises. Clearly in the case of miglustat, a man is not a mouse," he adds. Next? So with Adjudin showing positive results--but in rats--and miglustat no longer an option, will men see a new contraceptive in the near future? "The trick is to make sure we follow up on the leads we have," s...

NASA satellite data helps assess the health of Florida's coral reef

...ys to prevent it so that the impact of climate and man on these vital ecosystems can be minimized. ...

Sequencing of the oyster mushroom genome

...?similar to some of the contaminant compounds that man releases into the environment, such as certain colorants or oils and by-products of the timber industry such as pulp and paper. Thus, the study of the functioning of the oyster mushroom and of its strategies for adapting to its growth environment a...

PNAS study reveals why organs fail following massive trauma

...t immediate death for the primitive human. Modern man is more likely to survive severe injury caused by a car crash, gunshot or fall thanks to high-tech emergency medicine. Unfortunately, the body does not know what to do when it survives an injury that would have been fatal until recently in human evol...

Mars mission Risk 29: Scientists research ways to reduce radiation-induced brain damage

... lost on arrival. As part of a new push to put a man on Mars, NASA has sketched out a roadmap laying out 45 risks to astronauts in a space mission that is likely to last two years. Those risks include accelerated bone loss, motion sickness, the inability to treat minor illnesses, an inadequate quantity...

Blue eyes -- A clue to paternity

...ther. It is therefore reasonable to expect that a man would be more attracted towards a woman displaying a trait that increases his paternal confidence, and the likelihood that he could uncover his partner's sexual infidelity. Eighty-eight male and female students were asked to rate facial attractive...

What animals can tell us about hemorrhage, organ transplants and aging

The stereotype of a scientist as a man in a white lab coat hunched over a microscope in a laboratory is far from real life. Consider the scientists who will meet at The American Physiological Society's conference, Comparative Physiology 2006: Integrating Diversity, taking place October 8-...

Man may have caused pre-historic extinctions

...he northern hemisphere and the evolution of modern man around 100,000 years ago. It is known that the end of the Pleistocene period was a time of large-scale extinctions of animals and plants in North America and elsewhere but the factors responsible have remained open to question, with climate change ...

Brain-computer link lets paralyzed patients convert thoughts into actions

...atient, Matthew Nagle, a 25-year-old Massachusetts man with a severe spinal cord injury, has been paralyz...te technology. The second patient, a 55-year-old man with a similar injury, had the sensor implanted by surgeons at the University of Chicago in April 20...

Researchers offer clues to how leaves patterns are formed

... would behave like man--build the streets on which man himself would travel," said Scarpella. "However, the theory argued that in each individual vein auxin could only run one way at any given time, making them sort of alternate one-way streets." By labeling the protein that transports the hormone auxin...

Widespread elephant slaughter discovered in Chad

...nly about 150 feet above the camp, I could see the man shooting at us." No one was hurt. Zakouma National Park in southeastern Chad makes up part of a Texas-sized region of central Africa that until the 1970s was one of the continent's most intact wilderness areas, abundant in wildlife. The general regi...

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