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Science Ticker

About 1 in 5 teens has had a concussion

injured soccer player

About 20 percent of U.S. adolescents have had at least one concussion. Those teens were more likely to play competitive sports than those who never had a concussion.

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Nearly 1 in 5 adolescents has suffered at least one concussion, a survey of teens finds. Of those, 5.5 percent of them reported two or more concussions diagnosed in their lifetimes, researchers report in the September 26 JAMA.

About 13,000 eighth-, 10th- and 12th-graders took part in the 2016 Monitoring the Future survey, an annual national survey of adolescent behavior and health given in schools. Among other questions, teens were asked whether they had ever had a head injury that was diagnosed as a concussion — 19.5 percent had. Those teens were more likely to participate in competitive sports and be male, white and in a higher grade.

While past studies have found that kids taking part in contact sports have a higher risk of suffering a concussion, the authors of the new study note that data are lacking on how many U.S. adolescents have had concussions, information that’s vital to prevention efforts.

Earth

Plate tectonics started at least 3.5 billion years ago

By Carolyn Gramling 3:12pm, September 21, 2017
Analyses of titanium in rock suggest plate tectonics began 500 million years earlier than thought.
Animals

Old barn owls aren’t hard of hearing

By Helen Thompson 7:05pm, September 19, 2017
A new study suggests that older barn owls hear just as well as younger ones.
Astronomy,, Planetary Science

These are Cassini’s parting shots of the Saturn system

By Lisa Grossman 12:09am, September 15, 2017
In its last hours before plunging into Saturn’s atmosphere, the Cassini spacecraft turned its cameras to some of the system’s well-known features.
Planetary Science

The Cassini probe dies tomorrow. Here’s how to follow its end

By Helen Thompson 2:30pm, September 14, 2017
Science News is on the scene at NASA’s Jet Propulsion Laboratory for the big finish of the Cassini mission to Saturn.
Astronomy,, Planetary Science

So long, Titan. Cassini snaps parting pics of Saturn’s largest moon

By Lisa Grossman 4:05pm, September 13, 2017
The last swing past Saturn’s largest moon sent Cassini heading directly towards the planet — and showed how future spacecraft will explore other moons.
Astronomy,, Planetary Science

Final flyby puts Cassini on a collision course with Saturn

By Lisa Grossman 4:00pm, September 11, 2017
A “last kiss goodbye” with Saturn’s largest moon sent the Cassini spacecraft on its final trajectory into the planet’s atmosphere.
Astronomy,, Planetary Science

Pluto’s pits, ridges and famous plain get official names

By Lisa Grossman 6:05pm, September 7, 2017
From Adlivun to Voyager, the International Astronomical Union officially names 14 surface features on the dwarf planet.
Animals,, Biophysics

Why bats crash into windows

By Helen Thompson 2:00pm, September 7, 2017
Smooth, vertical surfaces may be blind spots for bats and cause some animals to face-plant, study suggests.
Particle Physics

The results from a slew of experiments are in: Dark matter remains elusive

By Emily Conover 8:00am, September 6, 2017
Scientists continue the search for particles that make up the universe’s missing matter.
Archaeology,, Anthropology,, Human Evolution

People may have lived in Brazil more than 20,000 years ago

By Bruce Bower 7:00am, September 5, 2017
Stone Age humans left behind clues of their presence at a remote Brazilian rock shelter.
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