5,618 results
5,618 results for: Bacteria
- Earth
Last Gasp: Toxic gas could explain great extinction
Sudden venting of hydrogen sulfide from the deep sea could have caused the largest extinction in Earth's history by poisoning land animals and destroying atmospheric ozone that protects Earth from ultraviolet light.
- Health & Medicine
Bacteria Provide a Frontline Defense
Bacteria genetically engineered to secrete microbe-killing compounds can fight disease in mice and rats.
- Health & Medicine
Persistent Cough: Pertussis rises in young adults and infants
Pertussis, or whooping cough, appears to be rebounding in many age groups, causing long-lasting symptoms in adolescents and adults and threatening the lives of unvaccinated infants.
- Materials Science
Magnetic nanorods on cruise control
Chemists have created miniature engines out of nanoscale metallic rods that propel themselves using chemical energy.
- Earth
A Whiff of Danger
Synthetic fragrance chemicals can inhibit the activity of molecules that cells depend on to eject harmful substances.
- Earth
PCBs damage fish immune systems
A common Arctic fish can suffer subtle immunological impairments from exposure to polychlorinated biphenyls at concentrations recorded in some remote polar waters.
- Humans
Nobel prizes: The power of original thinking
The 2005 Nobel prizes in the sciences honor a gutsy move, optical brilliance, and chemical crossovers.
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Genetic Pickup: Did animals get brain genes from bacteria?
Genes that make brain chemicals may have been acquired from bacteria.
- Ecosystems
Ambush Ants: Beware the moldy patch on that branch
Tiny tropical ants build shaggy platforms on plants and hide underneath them, poised to reach out and capture insects that may be far larger than themselves.
- Earth
Infectious stowaways
A new study finds that ballast water can move huge quantities of cholera germs and other microbes between ports around the globe.
- Tech
Bacteria churn out new type of electronic paper
Researchers have developed a new way of making flexible electronic paper displays using cellulose derived from bacteria.
- Health & Medicine
Swallowed a Fly: Insects may spread foodborne microbe to chickens
Flies sucked through the ventilation ports of industrial chicken coops may spread the pathogen Campylobacter jejuni, which can ultimately sicken people who eat undercooked chicken.
