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Health & MedicineU.S. outbreak of measles emerges
The United States is experiencing an outbreak of measles. A traveler likely brought in the virus from abroad, which is now spreading. Most of those infected were never vaccinated and could now face serious health risks.
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Health & Medicine10 things to know about measles
Many people think that the measles vaccine wiped out the disease — at least in the United States. It hasn’t. And people who were never vaccinated face the primary risk of getting this very serious disease
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AnimalsHellbenders need help!
Hellbenders already face threats such as habitat loss, pollution and disease. But climate change could make matters worse. And the problems facing hellbenders could spell trouble for more than just these giant amphibians.
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ClimateDistant pollution may intensify U.S. twisters
A new study of one of the deadliest U.S. outbreaks of tornadoes sees a possible role for smoke. In this analysis, the smoke had come from fires burning in Central America.
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Health & MedicineMost students wrong on risks of smoking occasionally
Teens know that heavy smoking can seriously harm health. But most, a new study finds, don’t realize that smoking only now and then also is harmful. Data from a survey highlight teens’ mistaken ideas about the risks of intermittent smoking.
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PhysicsSometimes light is not so fast
The speed of light is often called a “constant.” Experiments now show that light doesn't always reach its top speed.
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AnimalsScientists Say: Plankter
Plankton is the word used to describe a collection of these tiny free-floating organisms. This is what you call just one.
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AnimalsShark: Who’s your daddy?
Female sharks can store sperm from a male for months before releasing a case containing a fertilized egg. But almost 4 years? That’s a new record that has biologists scratching their heads over how this could have happened.
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ComputingDon’t hold ’em – just fold ’em
Scientists have designed a problem-solving process that allows a computer to win at a kind of poker. It gives a computer enough knowledge to win against any opponent — eventually.
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ClimateDesert plants: The ultimate survivors
Creosote, mesquite and other desert plants rely on different adaptations to thrive, even when no rain falls for an entire year.
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ClimateFast sea level rise is a very recent change
Sea levels have been rising for more than a century. But that rise is now speeding up. That suggests that what is driving the rise — climate change — also has increased dramatically in recent years.
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GeneticsImmunity: Environment can have big impact
A study on twins suggests that environmental factors can shape a person's immune system more than genes do.