Earth
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We summarize the week's scientific breakthroughs every Thursday.
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EarthPollution Keeps Rain up in the Air
New satellite data indicate that aerosol pollution can break up water droplets in clouds and stop rain.
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EarthHey polluters! This billboard’s for you
Motorists generally like and respond to personalized billboard messages about when an engine tune-up may be warranted.
By Janet Raloff -
EarthRecent heat may indicate faster warming
A new analysis of temperature records indicates that global warming may be picking up its pace.
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AgricultureSprawling over croplands
Satellite imagery indicates that sprawling urban development has been disproportionately gobbling up those lands best able to support crops.
By Janet Raloff -
EarthClimate’s Long-Lost Twin
New geological evidence suggests that humans have started exploiting fossil fuels and altering Earth's atmosphere at precisely the moment when greenhouse gases could do the most damage to climate.
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EarthDDT treatment turns male fish into mothers
Injecting into fish eggs an estrogen-mimicking form of the pesticide DDT transforms genetically male medaka fish into apparent females able to lay eggs that produce young.
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EarthJust how much do U.S. roads matter?
A Harvard researcher calculates that roads directly influence the ecology of a fifth of U.S. land area.
By Susan Milius -
EarthLiquid Assets
Research provides guidance on how best to bank water during times of plenty for use during subsequent droughts
By Janet Raloff -
EarthMajor mood swing alters Pacific character
The temperature of the North Pacific Ocean has apparently veered from one extreme to the other—a change that could alter North American weather for the next decade or two.
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EarthBackyard burning is recipe for dioxin
A few rural households burning trash may generate more toxic dioxins than a major, properly operated municipal incinerator.
By Janet Raloff -
EarthAs globe warms, atmosphere keeps its cool
Scientists confirm a confusing discrepancy between temperatures at Earth's surface and in its atmosphere.
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EarthThe Importance of Being Electric
By coordinating measurements from telescopes, planes, balloons, and a battery of instruments, terrestrial and space scientists have now placed themselves on almost intimate terms with sprites—luminous shapes that fleetingly appear high above lightning storms.
By Oliver Baker