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Tag: "confronting" at biology news

Mosquito genes explain response to climate change

...and dryer than others. Plants and animals are not confronting this stress directly, but rather they are flowering, reproducing and going dormant at different times of the year than they used to. Many species will be unable to change quickly enough and will become extinct." "Climate change will change the se...

Why do some queen bees eat their worker bee's eggs?

...olice" each other ?killing eggs laid by workers or confronting egg-laying workers. In 1964 the English biologist William Hamilton put forward his "relatedness hypothesis", a major landmark in kin selection theory. His hypothesis was that worker bees, wasps and ants do not reproduce because most workers are ha...

Anti-inflammatory drug's potentially deadly side effect found to be rare

...ults. Clifford says the concerns researchers are confronting now in natalizumab will likely have to be considered again as other drugs are developed using the same customized targeting techniques. "This drug is a good example of the potential of developing drugs with very specific biological targets in mind,...

Bringing the zoos to the zebras

...o teach the zoo public about the ecological issues confronting Grevy's zebras. "Zoos have an important role in the future of biodiversity, and are a key stakeholder in Earthwatch's research and education programs," said Dr. Marie Studer, chief science officer at Earthwatch. "We look forward to continuing our cl...

Scientists design potent anthrax toxin inhibitor

...additional form of therapy available to physicians confronting a case of inhalation anthrax," notes Phillip J. Baker, Ph.D., anthrax program officer at NIAID. Anthrax toxin has three parts: protective antigen (PA), a protein that binds to a receptor on the target cell surface; and two enzymes that must be trans...

Getting an evolutionary handle on life after reproduction

...oing investigations of the life history of guppies confronting different predatory threats in Trinidad. Individuals facing different mortality threats should evolve different adaptations in their life histories, such as age at first reproduction, investment in reproduction, and patterns of senescence, including ...

Hopkins AIDS experts issue warning about global efforts to provide drug therapies

...or developments in medicine that shared the issues confronting distribution of antiretroviral therapies. The first two pivotal events were advances to treat if not cure then-fatal diseases: the discovery of insulin for diabetes in 1922 and the mass distribution of the antibiotic penicillin in 1943. In the case...

Bound for destruction: Ubiquitination protects against improper Notch signaling

...g pathway represents a neat solution to theproblem confronting cells of how to prevent molecular loose cannonsfrom fouling their precisely ordered workplans....

A much-needed shot in the arm for HIV vaccine development

...accine remains one of the most difficultchallenges confronting biomedical research today," write the plan'sauthors, but fortunately "scientific progress has created newopportunities that could be harnessed more effectively through globalcoordination and collaboration.""These new opportunities include an expanded...

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