Post Tagged with: "science"

Image: André Karwath

Why Do Zebras Have Stripes?

A new study answers a question people have long asked themselves about the animal kingdom: Why do zebras have stripes?

If you want to try guessing the answer, stop reading now.

Have you guessed? OK, start reading again.

According to a new study, a zebra’s stripes most likely help to keep annoying, biting flies off them.

Scientists have thought that might be the reason.

However, they also had other theories: that the stripes provide camouflage to help them hide from enemies; to confuse their enemies; to help them stay cool; or for a social reason such as to attract a mate.

by · April 9, 2014 · Animals, Science
Image of the solar system. Image: NASA

Scientists Detect Light Patterns From First Moments Of Universe

A team of researchers announced March 17 that they have detected light patterns in space that could be relics of the earliest moments of the universe.

by · April 6, 2014 · News, Science
Atom diagram. Image: Fastfission

Scientists One Step Closer To Harnessing Energy From “Nuclear Fusion”

A group of scientists in the United States has come one step closer to harnessing a source of energy that would be clean, safe and nearly unlimited.

The scientists, who work at the Lawrence Livermore National Laboratory in California, are trying to find a way to generate energy efficiently using a process called nuclear fusion.

by · March 19, 2014 · News, Science
A map od the Great Lakes. Image: brian0918

Great Lakes Almost Frozen Over This Year

The Great Lakes were almost completely frozen over by March 2, with 90.5 per cent of their total surface covered in ice.

The five connected lakes are located on the border between Canada and the United States, in northeastern North America.

Although some sections of the lakes freeze each winter, usually only about 50 per cent of the water is covered with ice.

In 2012-2013, only about 38 per cent of the lakes was frozen over, and just 13 per cent was covered with ice in the winter of 2011-2012.

by · March 5, 2014 · Environment, News, Science
Image: John Valley

Oldest Thing On Earth Is A 4.4-Billion-Year-Old Gem

Scientists have found the oldest known piece of our planet.

A blue zircon crystal, found on a sheep ranch in Australia, is about 4.4 billion years old.

The gem is about twice the width of a human hair.

by · February 26, 2014 · News, Science
Stephen Hawking. Image: NASA

Stephen Hawking Says “Black Holes” May Actually Be “Grey”

Stephen Hawking is a physicist, an expert in the science called physics, and generally regarded as a genius for his work in helping us better understand the universe.

by · February 17, 2014 · News, Science
A doctor with a stethoscope. Image: Alex Proimos

Student Doctor Finds Real, Life-Threatening Illness In “Patient-Actor”

A student doctor recently saved the life of an unusual patient, in a very unusual way.

Ryan Jones, a medical student at the University of Virginia School of Medicine, was practicing diagnosing illnesses.

As part of his training, he and other student doctors had to diagnose an actor who was playing the part of an ill patient.

The actor would act out symptoms of an illness he pretended to have, and the medical student had to figure out what the illness was.

Of course, the actors didn’t really have any illness—they were just pretending.

Except, in the case of Jim Malloy, he really did have the illness and didn’t know it.

by · January 13, 2014 · Health, Science
Image: Joyce Grant

Extreme Weather In Many Cities Over The Holidays

Many cities in North America experienced extreme weather during the 2013 holiday season.

On Dec. 22, Toronto was struck by an ice storm which caused trees to become covered with large amounts of ice.

Although it was often beautiful, it was also destructive.

Many of the trees couldn’t support the weight of the ice and branches came crashing down.

Some of the branches took out power lines, so hundreds of thousands of people in the city were without power for hours or days.

by · January 6, 2014 · News
Take Our Fun Quiz: 2013 In Review (Part I)

Take Our Fun Quiz: 2013 In Review (Part I)

How much do you know about the news that happened in 2013?

Take our quiz and see how much you remember about these stories from the past year. The link beside each question will take you to the TKN article that will give you the answer.

1) First Nations, Inuit and Metis people came together to form a movement for peaceful protest. What did the group call itself?

2) Chris Hadfield is famous for _____________. (Note: There are many possible correct answers for this one — fill the blank with what you know about Hadfield.)

by · January 5, 2014 · News
This new view of Comet C/2012 S1 (ISON) was taken with the TRAPPIST national telescope. Image: TRAPPIST/E. Jehin/ESO

The “Comet Of The Century” Set To Put On A Show

Comet ISON is about to put on a show.

Scientists around the world are watching as ISON streaks, ever-faster, towards the sun.

NASA has been studying ISON since December, when it was more than 800 million kilometres away.

Experts are calling Comet ISON as “the comet of the century.”

What is a comet? Here’s how astrophysicist Julie Abraham describes a comet: “It’s basically a big ball of dirty ice in orbit around the sun that gradually melts or burns up, spewing out debris and water in a plume blown out behind it.”

by · November 26, 2013 · News, Science