مقالات بها 400-600 كلمة

The fact that trees are vital to our well-being is no secret. They provide us with food, wood and most importantly, oxygen. Now there is one more thing you can add to this already lengthy list - filtering out harmful bacteria from water....

The five-second rule has been around for many years. According to age-old adage it is okay to pick up food that has touched the ground, as long as it is done within that time frame. But is it really? Depends on which scientific study you want to believe....

On Saturday, March 29th, millions of people in more than 7,000 cities and over 150 countries will do something radical - Switch off all lights and electronic devices from 8.30-9.30pm local time! Why? Because believe it or not, this minor action that has become known throughout the world as 'Earth Hour' will help make a dent in the fight against climate change....

The next time you moan and groan about being asked to take a shower, think about this statistic - there are about 1.2 billion people in the world that do not have access to sanitation facilities. Even more shocking is the fact that many of them live in developed countries. Now, San Francisco-based startup Lava Mae, is trying to change that with a simple but brilliant idea - transforming decommissioned buses into mobile showers for the homeless....

When one thinks of ladybugs or ladybirds as the British like to call them, the images that come to mind are those of a super cute insect that can barely hop, leave alone zoom at high speeds and soaring heights. Turns out that the aphid lovers that are considered by many as a sign of good luck, have been hiding this unexpected talent from us, all this time....

People often brag about living or working close to the subway or train station they use for their daily commute. However by that they usually mean a block or two away, not literally on the railway tracks like these folks in Vietnam and Thailand....

Though elephant poaching is banned throughout Africa, unscrupulous hunters continue to slaughter the mighty beasts in large numbers. While that is sad enough, what is even worse is what happens to orphaned baby elephants. Unable to feed themselves, they become weak and are often abandoned by their herds for fear that they will attract lions. Now thanks to one British girl, there is hope, at least for the orphaned calves in Zambia....

With humans increasingly invading and polluting spaces that were once teeming with wildlife, the list of endangered animals grows longer every day. Now South Korea, a country that boasts a population density 10 times the global average, is planning to take a bold step to try reverse at least some of the damage, with a new National Research Center for Endangered Animals....

If you have not had a reason to smile today, here is one - It is the 2nd International Day of Happiness! Established by the United Nations on June 28th, 2012, to promote social inclusion and intercultural harmony, it encourages individuals and corporations to celebrate the day in 'an appropriate manner, including through education and public awareness-raising activities'....

In a report published in the March 16th edition of Nature Geoscience, scientists revealed that the tiniest member of our Solar System, Mercury, is shrinking even further. According to lead researcher Paul Byrne from the Carnegie Institution of Washington, the small planet has contracted about seven kilometers (four miles), significantly more than revealed by previous findings....

At first sight, the Foldscope looks like a hastily assembled children's toy. However look closer and even into it, and you will realize that it is a powerful working microscope - one that can be used to detect dangerous blood-borne diseases like malaria and sleeping sickness, allowing for early treatment and potentially, saving thousands of lives....

Most athletes and trainers believe that one has to be in optimal health to perform well. But don't tell that to Kayla Montgomery. The senior at Mount Tabor High School in who competes in long-distance track and cross country running has repeatedly proved that sheer determination and desire to win, more than make up for any physical limitations....

With less than 400 specimens known to exist today, the North Atlantic right whales rank high on the list of the world's most endangered animals. While most of the population decline can be attributed to relentless hunting that continued well into the 20th century, the few mammals left, are now fighting a new enemy - Lobster fishing nets!...

For those detest that math, tomorrow is the one day the subject becomes slightly tolerable. That's because it's Pi day, which means that the celebration will most likely entail chowing down a few pieces of its yummier food namesake - pie!...

Usually when NASA scientists report on new planets, they talk about one or two. However, on February 26th, the US Space Agency stunned space lovers when they announced the discovery of 715 new worlds, almost doubling the size the galaxy, which had previously been thought to have comprised of 961 planets....

At first sight it looks like a mundane desk, the kind most kids spend hours completing their homework on. But flip open the top white cover and you will discover a mission control center that even NASA scientists would be proud to own. What's even more amazing is that this intricate creation is the work of a dad who understands that kids need something to look forward to, after grinding through hours of math, science and whatever else their teachers decide to assign....

With over 40,000 known species of spiders, scientists had believed they knew everything there was to know, about these web building arachnids. However, that was before they discovered two new species that dupe their predators by building incredibly accurate decoys of themselves....

Here is some good news for those of you that have been enduring below freezing temperatures for the last three months - Spring is almost here, at least as far as the clocks are concerned. That's because this weekend, most Americans will anticipate the season change by moving their clocks ahead by an hour. Also referred to as Daylight Saving or British Summer Time, this age-old tradition dates all the way back to World War One....

Climate change is causing havoc on weather patterns throughout the world. While some areas are getting more than their fair share of snow and rain, others are parched. Though the lack of precipitation is certainly an issue, evaporation of the water collected in the reservoirs is even more so. The US State of Texas estimates that the amount of moisture it loses to this phenomenon annually, could easily sustain the entire city of Austin, for that time period....

About four months ago, guests lunching on the pristine white sand beaches outside Greystoke Mahale, a luxury wildlife camp located on the shores of Lake Tanganyika in Africa, were treated to an unusual sight - A Great White Pelican emerging from the waters and waddling towards them....

San Francisco-based artist and designer George Zisiadis is making quite a splash with his work. But you won't find his exhibits inside any local art gallery or museum. That's because George specializes in bringing child-like joy to his fans with whimsical installations that are a perfect mesh of technology and art....

CuteCircuit, a company known for its exquisite light-up designs dubbed 'wearable technology', has slowly but surely, been making its way into the mainstream market. Fashion icons like Nicole Scherzinger and Katy Perry have proudly donned their innovative creations on several occasions. So it was not surprising to see the company make its runway debut on the grandest stage of all - The New York Fashion Week!...

The next time your dog chews up your homework or favorite t-shirt don't waste your energy admonishing him/her. That's because while it may seem sad and look at you with sorrowful puppy eyes and tail tucked between the legs, scientists say dogs have no idea what shame is....

The next time you are out walking your dog, be sure to keep your eyes peeled on the ground, for you never know what treasures you may find. That is exactly what happened to a California couple who recently stumbled upon what is being touted as the most valuable ancient gold find in North America....