Newy dated footprints: Oldest human tracks?

Science News For Kids - Mon, 2014-07-21 09:01
These footprints, found nearly a half-century ago, may be almost four times older than first thought, scientists now report.
Categories: Science & Math News

Bugs may have made us brainy

Science News For Kids - Fri, 2014-07-18 08:55
Finding and eating bugs when other food was scarce helped primates — including our ancestors — evolve bigger and better brains. At least that’s the conclusion of a new study in Costa Rica.
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Young blood: The elixir of youth?

Science News For Kids - Thu, 2014-07-17 08:00
Old mice show improved memory when blood from young mice circulated through their brains, a new study finds. Other studies suggest one ingredient in that young blood might be all it takes to deliver benefits.
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The war on superbugs

Science News For Kids - Wed, 2014-07-16 09:01
Doctors and scientists are exploring ways to stem the growing global crisis of antibacterial resistance.
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Explainer: What you can do to fight antibiotic resistance

Science News For Kids - Wed, 2014-07-16 09:00
Doctors and scientists are not the only people who can help preserve the effectiveness of life-saving antibiotics. Even patients have a role to play, as these tips show.
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Questions for The war on superbugs

Science News For Kids - Wed, 2014-07-16 09:00
ScienceBefore reading 1.    With a partner, research the difference between bacteria and viruses.2.    Think of the last time you were ill with something other than a cold. What symptoms did you have? What kind of medicines were you given?During reading1.    How do microbes become resistant to antibiotics?2.    What is the leading cause of death among young adults, worldwide?3.    Some disease experts once thought that tuberculosis could be wiped out by 2025. Why is that now unlikely?4.    Why might a doctor prescribe an antibiotic for a patient that won’t be helped by it?5.    What did Daniella Meeker have doctors do that resulted in them reducing the number of antibiotics they prescribed?6.    What are hospitalists?7.    How can researchers find out what kind of antibiotics a TB germ might be resistant to?
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The HIV cure — that wasn’t

Science News For Kids - Tue, 2014-07-15 08:46
Immediate and aggressive drug treatment of a baby born with HIV appeared to have cured the girl. In fact, a follow-up shows, she still has the disease.
Categories: Science & Math News

Mega-bird!

Science News For Kids - Mon, 2014-07-14 10:03
What may have been the bird world’s biggest flier ever had wings so long, they would have had trouble flapping fast enough to keep it aloft in tough winds. But this behemoth would have been able to soar both far and fast.
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Your food choices affect Earth’s climate

Science News For Kids - Fri, 2014-07-11 09:01
Producing food can put a lot of climate-warming pollutants into the atmosphere. But some foods, especially meats, contribute more than others.
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Superbugs: A silent health emergency

Science News For Kids - Thu, 2014-07-10 08:57
Have antibiotics become too popular? Overusing these medicines fuels resistant germs that pose a global health threat.
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Explainer: Where antibiotics came from

Science News For Kids - Thu, 2014-07-10 08:57
A mold proved the source of the first known antibiotic: penicillin. But chemical dyes would lead to the first antibiotics used in treating people.
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Questions for Superbugs: A silent health emergency

Science News For Kids - Thu, 2014-07-10 08:56
SCIENCEBefore reading1.    What might cause people to get sick?2.    When you have been sick, what kinds of medicines have you been given? Have you ever been given an antibiotic? (Some antibiotics include penicillin, amoxicillin and erythromycin.)During reading1.    What is antibiotic resistance? Why are people worried about it?2.    How can antibiotic-resistant germs travel from people out into the environment?3.    Why is MRSA particularly nasty in hospitals and prisons?4.    Why shouldn’t a person infected with a virus be treated with an antibiotic?5.    What class of infectious germs causes most types of common cough?6.    Why do farmers give antibiotics to healthy animals?7.    Why would Kellogg Schwab call antibiotic use in healthy farm animals “a direct threat to human health”?8.    What is a plasmid?
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Sunlight makes pleasure chemical in the body

Science News For Kids - Wed, 2014-07-09 08:30
A day on the beach might deliver more than a tan (or sunburn). It may also release potent brain chemicals that leave people with a pleasurable feeling.
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This dino-bird is super-feathered

Science News For Kids - Tue, 2014-07-08 09:00
This late-Jurassic dino was also a bird. Its ample coat of feathers emerged before any need for flight.
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Neandertal ancestor?

Science News For Kids - Mon, 2014-07-07 08:42
Fossils found in a Spanish cave have features that are a combination of Neandertals and other species. The mix suggests Neandertal roots go back even farther than scientists had suspected.
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What to wear on Mars

Science News For Kids - Thu, 2014-07-03 08:25
NASA released details of the new, more flexible apparel being designed for long-distance travelers — such as those bound for another planet.
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Very-sub-zero water

Science News For Kids - Wed, 2014-07-02 10:10
Using lasers, scientists measured the temperature of water droplets that remained liquid even when super-cold.
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Cool Jobs: A whale of a time

Science News For Kids - Tue, 2014-07-01 08:57
Studying blue whales, spinner dolphins and other cetaceans demands clever ways to unveil the out-of-sight behaviors of these marine denizens.
Categories: Science & Math News

Explainer: What is a whale?

Science News For Kids - Tue, 2014-07-01 08:57
Can a dolphin be a whale — or a whale be a dolphin? Yes, because the terms used to describe the biggest marine mammals are quite elastic and fuzzy.
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Questions for Cool Jobs: A whale of a time

Science News For Kids - Tue, 2014-07-01 08:57
SCIENCEBefore reading1.    Explain what you know about marine mammals. How many species can you name?2.    What threats do whales face? List as many as you can.During reading1.    How much can a humpback whale weigh?2.    What are cetaceans?3.    Why is sound more useful than light in exploring the ocean?4.    What happens to the pulses of sound that Kelly Benoit-Bird sends into the water? What can those pulses reveal?5.    How did the spinner dolphin get its name?6.    Describe how spinner dolphins hunt fish.7.    About how long is an adult blue whale?8.    Explain the similarities between a tree’s rings and a whale’s earwax.
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NSF logo This material is based upon work supported by the National Science Foundation under Grant No. DUE-0840824. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.