All Stories
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Health & MedicineOngoing Ebola outbreak traced to hollow tree
Scientists suspect the current Ebola outbreak started with bats that lived in a hollow tree in Guinea. The outbreak's first victim, a two-year-old boy, often played in the tree.
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Health & MedicineNew germ fighter turns up in dirt
Scientists have found a compound in soil that can kill the microbes that cause anthrax, tuberculosis and other diseases.
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EarthTides may regularly swamp many U.S. cities
As sea levels rise, many cities will begin to experience frequent and extensive flooding at high tides. In some areas — even Washington, D.C. — such flooding could become a weekly headache.
By Sid Perkins -
ChemistryAir pollution can mess with our DNA
New research suggests a type of air pollution — diesel fumes — can affect your health. It inappropriately switches some genes on, while turning off others.
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Finalists named for major teen competition in Washington
Forty teen researchers have been selected to compete in the Intel Science Talent Search. The event — a program of Society for Science & the Public — will take place in Washington, D.C., March 5 to11.
By Sid Perkins -
Make 2015 a year of science
Add some science to your new year. Every month has at least one event with a STEM —science, technology, engineering or math — theme. Mark your calendars to learn and celebrate.
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Health & MedicineA whale of a lifespan
Bowhead whales can live more than 200 years. The secret to such longevity may lie in the Arctic species’ genes. Scientists recently mapped the whale’s genetic code. They found features that protect the marine mammal against cancer and other problems related to old age.
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LifeScientists say: Biomagnify
Chemicals in the environment can build up in an animal’s tissues. Predators who feed on these animals can accumulate more and more of the pollutants, a process known as biomagnification.
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Health & MedicineCold noses nurture colds
The common cold infects the nose. Scientists long have known the virus grows better there, but not why. Now, a study finds the body’s defenses simply don’t work as well under the nose’s slightly cooler temperatures.
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SpaceBlack holes are on collision course
But be patient. The distant galactic smashup is still some million years away.
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ComputingVirtual wounds: Computers probe healing
To better understand how the body heals wounds, scientists have begun creating computer programs that let virtual cells fight it out. These ‘computer games’ could lead to better medicines.
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ChemistryRewritable paper: Prints with light, not ink
Rewritable paper could save money, preserve forests and cut down on waste — and all without using any ink.