When a buzzing hornet comes near, most people want to run
away as quickly as possible. But if the hornet targets your home, you will need
to find a way to shoo it away.
Fortunately, hornets generally don’t target people’s homes. In
southern Asia, however, a type of big hornet
does frequently attack giant honeybees while they are clustered around their
homes.
Scientists have discovered how this clever bee species uses
“shimmering” to drive such predators away.
Shimmering creates a rippling effect on the beehive, similar
to the effect seen in a sports stadium...
Published:
2008-09-23 15:46:06
Found in: Science News For Kids
Not all math skills are learned in the classroom. Some of
them come naturally. Consider the split-second calculations you make when you
estimate the number of empty seats on the school bus or gauge the number of
cookies in a cookie jar.
These ballpark estimates can often be done without counting.
That’s because humans are born with the ability to approximate, or closely
guess, the number of items in a group. Researchers refer to this trait as a
person’s “number sense.”
Scientists have discovered that this inborn sense of numbers
may influence learning and achievem...
Published:
2008-09-19 15:07:52
Found in: Science News For Kids
It's the ultimate way to pull off a sting: Teach a group of
ordinary honeybees to ignore flowers and, instead, focus on vapors from explosives used
in bombs. Then send the bees off in teams to sniff out terrorists. Or track the
molecular trail of illicit drugs, or even point police to a rotting corpse.
In recent years, researchers have shown that with just a few
minutes of training, undercover bees can detect the smell of TNT,
methamphetamine or almost any other scent just as the bees would respond to
pollen. Wasps’ sniffing abilities may also be put to use finding... (p. 16)
Found in: Life
When Alice
climbs through the looking glass, she encounters a topsy-turvy world. People
are punished before committing a crime, and sometimes fingers bleed before a
pinprick occurs. Those strange events reflect a memory that works both ways in
that world, allowing people to remember things before they happen. As the Queen
explains to Alice: “It’s a poor
sort of memory that only works backwards.”
Now, back in this world, scientists are discovering that
human memory does indeed work forward. A growing number of studies show that
the mental machinery for reliving your past perfo...
Found in: Body & Brain
Chimpanzees not only share our ability to use tools. They also
share our ability to create tools for a specific purpose. A group of Japanese
scientists recently witnessed this inventiveness in action.
The researchers watched a 5-year-old chimp named JJ use a
long twig to capture ants in a new way. At first meeting with only limited
success, the innovative chimp then refashioned his tool for better results.
Tool use among chimpanzees is well documented. Chimps in
some communities, for example, plunge long sticks into anthills and then eat
the clumps of ants that cling to th...
Published:
2008-05-23 14:14:56
Found in: Science News For Kids
Spin around quickly for a long period of time, and you’re
likely to lose your balance and fall. Strangely, a similar thing can occur with
orbiting bodies such as a planet. Spinning on its axis for millions of years, a
planet’s surface features can shift position over time, upsetting its balance.
If a major shift occurs, the planet might even tilt over.
Now, scientists say such a shift actually happened on Jupiter’s
large icy moon Europa. Recent images taken from three different spacecraft —
Voyager, Galileo and New Horizons — provide the clues.
The images show th...
Published:
2008-05-23 14:22:54
Found in: Atom & Cosmos and Science News For Kids
Science News for Kids explores the sensory explosion that defines the experience of people with this unusual, but not that uncommon nor unwelcome, condition.
Published:
2008-05-22 20:09:56
Found in: Body & Brain and Science News For Kids
Scientists tracking H2O's highs and lows are finding new clues as to how and why the familiar substance is so odd. Recent research, for example, suggests that water may exist in two distinct liquid phases at ultralow temperatures. (p. 58)
Found in: Physics