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Tag: "dirty" at biology news

Dirty snow may warm Arctic as much as greenhouse gases

...e have determined that a lesser-known mechanism -- dirty snow -- can explain one-third or more of the Arcti...rily attributed to greenhouse gases. Snow becomes dirty when soot from tailpipes, smoke stacks and forest fires enters the atmosphere and falls to the groun...

GROWing the next generation of water recycling plants

... species, the engineers guard against an unusually dirty batch of water exceeding a particular species' tolerance level. Should one species die off, there will still be others there to continue the job until the dead plants can be replaced. The beauty of the system is that it is not 'high-tech' in the tr...

Plant wounds trigger bacteria

... employs a large tumor-inducing plasmid to do its dirty deed. The plasmid is a ring of DNA that is separate from the chromosome and is not essential for the bacterium's survival but is required for tumor growth. The plasmid can also transmit itself from one bacterial cell to another when the two cells tou...

Study uncovers dirty little secret: Soil emissions are much-bigger-than-expected component of air pollution

.... Besides producing ozone smog, they help form the dirty brown clouds that often hang over major cities, they contribute to acid rain and they play a role in global climate change. In addition to equatorial Africa, hot spots for soil emissions include the central plains of the United States; southwestern ...

Scientists ID molecular 'switch' in liver that triggers harmful effects of saturated and trans fats

...y which saturated fats and trans fats can do their dirty work," said Spiegelman, who carries out basic research on fat cells and metabolic pathways in diabetes and cancer at Dana-Farber. "It offers the opportunity to try to understand what makes these fatty acids so deleterious, and what we need to avoid."...

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