مقالات بها 600-800 كلمة

With no threat of predators or the need to hunt for food, shelter, or find a mate, zoo orangutans have an extremely comfortable existence. But this also means that the smart animals lack the critical challenges they need for their mental and emotional well-being. To ensure the curious mammals that share 97% of their DNA with humans do not get bored and depressed, zookeepers are always looking for new ways to keep them entertained and challenged....

On May 18, 1969, NASA astronauts Thomas Stafford, John Young, and Eugene Cernan blasted off from Cape Canaveral aboard the Apollo 10 lunar module, the fourth manned mission in the US Apollo Space program and only the second after Apollo 8 to orbit the moon. Its mission was to circle the moon and thoroughly test the components and procedures to pave the way for the first lunar landing. The mission went flawlessly and without incident — At least that's what everyone believed....

Athletes and sports fans hoping to attend the 2016 Summer Olympics in Rio de Janeiro, Brazil this August may be faced with a terrible dilemma. They will have to decide if a quest for a medal or the opportunity to cheer their favorite athlete is worth the potential health risk posed by the Zika virus that has been plaguing Brazil since April 2015....

For most people normal winter sports like ice skating, skiing, or snowboarding provides enough excitement. However, for a select few adventurous souls those are not sufficient. They prefer to take advantage of the abundant snow and ice with 'sports' that range from heart-stopping to downright hilarious....

When humans began Space exploration about 55 years ago, they had no intention of leaving behind equipment that had served its purpose. It could after all, easily fall to Earth and harm innocent people. But that fear subsided in 1964 when American research satellite Vanguard 1 continued to rotate in orbit even after it had lost all contact with ground scientists. Since then researchers have become increasingly comfortable about leaving trash behind....

Remember ROY.G. BIV (red, orange, yellow, green, blue, indigo, violet), the mnemonic that helped you to memorize the order and colors of the rainbow? Well, you can forget it because as it turns out, not all rainbows are equal. They can vary drastically depending on the conditions under which they occur. A team led by atmospheric scientist Jean Ricard of the National Centre for Meteorological Research in Toulouse, France, has identified twelve rainbow 'flavors', each with its own distinct characteristics....

The 2015 holiday season brought little cheer to the thousands of Southern California residents affected by a methane leak from an underground gas storage facility. Since late November, over 2,800 families from the Porter Ranch Community in Los Angeles have been forced to flee their homes to escape the adverse effects of the odorless gas. What's worse is that they have no idea when they will be able to return....

At the stroke of midnight on December 31, cities around the world welcomed the new year with elaborate fireworks shows. Here are some of 2016's most spectacular displays. So cuddle up with a warm blanket and a cup of hot chocolate and enjoy the shows!...

All hotels renovate periodically. However very few do it as frequently as Sweden's ICEHOTEL. As the name indicates the hotel that is located in the remote village of Jukkasjärvi is constructed entirely from ice and therefore, has to be rebuilt annually!...

This is the time of the year when most people reach out to help those in need. For some, it means donating to a local food bank. For others in involves participating in clothing and toy drives. This year, two remarkable people have taken the season of giving to a new level with their simple but ingenious ideas....

In July 2014, a helicopter pilot flying over Northern Russia's remote Yamal Peninsula came across a massive crater in the thick, permanently frozen subsurface layer of soil known as permafrost. As news of the gaping hole that measured an impressive 100-meters in diameter spread, people all over the world began wondering about its origin....

Tomorrow, November 26th is Thanksgiving, one of the most popular holidays on the American calendar. Celebrated on the last Thursday of every November, the day commemorates the 1621 harvest reaped by the Plymouth Colony after a harsh winter. While food and family remain at the forefront of the celebrations, several new traditions have been introduced over the years. How did all these fun rituals begin? Read on . . ....

Despite technological advances in fuel and engine efficiencies, vehicles remain high on the list of polluters. In the U.S alone, carbon emissions from gas-powered cars and other vehicles account for about 27% of our total greenhouse-gas output annually. The 'World Solar Challenge' hopes to change that some day with cars fueled by the biggest, cleanest, and cheapest, source of energy - The sun!...

It is Friday the 13th! Though that fact may be of no significance to you, many consider the combination unlucky. While most years we encounter this dreaded day just once or twice, this year we have had to suffer through it three times....

India is known for a myriad of colorful festivals. However, very few are as joyous as Diwali or Deepavali (row of lighted lamps). Also called the Festival of Lights, the ancient holiday that extends across many cultures and beliefs is celebrated for five days and is one of the most anticipated and eagerly awaited of all Indian celebrations....

While world population continues to increase, our freshwater supplies appear to have stagnated and in some cases even trickled to a halt. Residents all the way from California to Brazil are battling multi-year droughts. Earlier this year, some citizens of Sao Paola were so desperate that they drilled through basements and parking lots to try access groundwater. Experts estimate that there are currently a billion people in the world that lack clean drinking water....

An invisibility cloak might be easy to come by if you are a young wizard like Harry Potter, but developing such a device for the real world has proven to be a challenging task for scientists. Over the years, there have been numerous attempts. While each version has been slightly better than the previous one, none has come even close to the original 'created' by J.K. Rowling....

On October 3rd, East Coast residents were relieved to hear that Hurricane Joaquin which had been hurtling towards the U.S., was no longer a threat. According to meteorologists, the hurricane that was weakened to a category 3 after battering the Bahamas, would likely remain out to sea instead of ramming into the coastline as had been previously thought....

On August 3rd, 1492 Italian explorer Christopher Columbus set sail from Palos de la Frontera, Spain, to seek out a western sea route to China and India. However, the explorer and his crew never made it to the gold and spice islands of Asia. Instead, about two months later, on October 12th, they landed on a small island in the modern-day Bahamas that Columbus claimed for Spain and named San Salvador....

Thanks to its carved topography, researchers have always suspected that Mars was once home to several rivers, lakes, and perhaps even oceans. There has even been some speculation about the existence of frozen water deep beneath the ground. However, finding evidence of liquid water in the present day, has been a little elusive. That is why NASA's September 28th announcement that confirmed the detection of liquid brine on the Red Planet caused so much excitement....

Mention wasps and you are bound to hear exasperated tales of picnic sabotages and painful stings. But as it turns out, humans have it relatively easy, at least compared to some poor spiders that the wasps turn into web-weaving zombie slaves....

The summer of 2014 was all about people pouring orange buckets of ice water over their heads and challenging others to do the same. But as fun as it was, the individuals were not just goofing off. They were rising to the Ice Bucket Challenge that encouraged people to either douse themselves or donate $100 USD towards ALS research. The dare that went viral globally enabled the Foundation to raise an astounding $115 million USD in a few short months. Now, just a year later, the generous donation is helping facilitate new breakthroughs in the disease that currently has no cure....

With childhood obesity rates on the rise, schools are going all out to encourage students to become more active and make healthier food choices. Some have added standing desks; others have revamped their cafeteria menus. In Dillwyn, Virginia, the educators have gone one step further - They have designed a school that incorporates movement and healthy eating....

Freestyle motocross maestro Robbie Maddison is well-known for his heart-stopping stunts. In 2008, the Australian daredevil wowed the world with a leap over the 164-feet tall Arc de Triomphe in Paris, France. In 2014, he performed several back flips over stationary airplanes at the military service aircraft graveyard in Tucson, Arizona. However, neither compare to his latest stunt - "Surfing" a wave on a slightly modified KTM dirt bike....