Latest Science News Articles not published in the print magazine.
Updated: 1 hour 18 min ago
This asteroid is spewing water vapor, a new study reports.
Astronomers may have finally figured out why predictions of the amount of matter in the universe don’t match observations. A huge amount may hide in the gas clouds that surround galaxies.
Genes from an ancient skeleton suggest that dark-skinned people may have been the first to evolve blue eyes.
Population density can determine how much of an impact modern communities have on the climate.
SCIENCEBefore reading:1) What does a skeleton do? Why is it important?2) Would you describe your skeleton as alive or dead or neither? Explain your answer.During reading:1) Where is bone marrow found, and why is it important?2) Why do bones remodel themselves?3) List the three types of bone cells involved in breaking down and building up bone and describe what each does.4) How do doctors determine the strength of someone’s skeleton?5) Why does the body sometimes “steal” calcium from the skeleton?6) Why is vitamin D important for bone health?7) List three types of exercises that help build strong bones.8) Describe the “conversations” between bone and muscle — what are these tissues telling each other?
This hard tissue is more than just a quiet scaffold for your organs and protective helmet for your head. It’s active and ‘chatty,’ influencing other tissues.
Scientists may have unearthed the source of Mima mounds, mysterious bumpy landscapes found on every continent except Antarctica.
Head movements play an important role in successfully tracking lightning-fast incoming pitches.
Forty high-school seniors learn they have been named finalists in the March Intel Science Talent Search competition.
A supernova first spotted in 1987 produced a huge cloud of space dust. Astronomers are now finding clues in it to how stars formed in the early universe.
Few veterinarians are available to treat sick animals in their natural environment. Fortunately, some critters can doctor themselves.
SCIENCEBefore reading: 1. Has anyone ever recommended a special food or drink to help you feel better when sick? What was it? Did it have any effect?
The nicotine in tobacco that poisons some creatures can also act as a chemical defense — at least for some caterpillars. The bad breath it gives these insects repels natural predators, such as spiders.
Electric-car designers think they’ve found a way to replace the differential. Computer-controlled wheels and a bevy of electronic sensors now help take the place of old-school gears.
Electroconvulsive therapy is used to treat severe depression, but the electrical jolt it sends into the brain also may erase bad memories.
The American Academy of Pediatrics suggests taking steps to limit children’s exposure to pesticides.
SCIENCEBefore reading:1) A honeybee may visit several hundred flowers on a single trip. Why would that make a honeybee more vulnerable to the negative effects of pesticides?2) Brainstorm a list of foods you eat that rely on pollination.During reading:1) What do the letters CCD stand for? What is CCD’s effect on bees?2) What proportion of commercial honeybee colonies can be lost to CCD each year?3) List at least three suspects behind CCD.4) How does climate change threaten honeybees?5) What are neonicotinoids?6) Explain what Christopher Connolly discovered about the effect of neonicotinoids on the honeybee brain.7) How does diesel exhaust affect the floral scents that lure honeybees?8) In what way do honeybees play a role in the production of meat and dairy products?
Scientists find evidence that pesticides, disease and other threats are devastating bees. And that could hurt farmers big time.
When squished between two diamonds and zapped by a laser, salt’s atoms can link up in unexpected ways.
The outdoor dust that dogs drag in contains a mix of microbes that helped mice fend off allergic reactions and viral infections.