Articles for Grade 7

The Port of Astoria in Oregon is battling an unusual challenge - how to rid the area of the over 2,300 sea lions that have taken up residence on the piers, without harming them. That's because while the squabbling pinnipeds may be adorable to look at, they are a nuisance and extremely destructive, especially in such large numbers....

Memorial Day, a Federal US holiday that is observed annually on the last Monday of May signifies different things to different people. For some it's a reminder to firm up summer vacation plans, for others it's an excuse to lounge around the pool with friends. Then there are the shoppers who believe the day is all about hitting the malls for bargains. What often gets forgotten is the real purpose of the holiday - to honor and remember the brave men and women of the United States Armed Forces that sacrificed their lives to defend our right to freedom....

The Opah is a striking fish species that can grow as large as 7-feet in diameter and weigh over 100 pounds. Also referred to as moonfish, the giants that can be found in both temperate and tropical seas reside at depths of 150 to 1,300-feet where the waters can be extremely chilly. Scientists have often wondered how the fish can withstand the temperatures given that they lack typical deep sea dweller characteristics like a large heart. Now thanks to some curious California researchers that mystery has finally been solved - The Opah has warm-blood!...

Creating a "green" or carbon neutral fuel to replace gasoline has been the holy grail for scientists for many years. However, while there has been some progress with inventions like electric batteries and biofuel, most options are either too expensive or not commercially viable to compete effectively with the fossil fuel. Now automobile manufacturer Audi is stepping up to the challenge with diesel made from carbon dioxide and water....

Though there are numerous saltwater lakes around the world, none can compare to the Dead Sea. Located between Israel and Jordan in the Middle East, the water of this landlocked lake boasts salt levels almost ten times that of oceans. The unusual salinity can be attributed to the fact that there is no outlet for the minerals to leave, causing them to accumulate. The same is not true of the water level, which remains constant due an almost even inflow from the Jordan River and loss through evaporation....

Over the years, numerous animal and bird species have become extinct. However, it is rare for the entire world to witness one as it is happening. This could very well be the case with the northern white rhinos given that there are currently only five known specimens left. What's worse is that only one, a 42-year-old named Sudan is male! If he passes away without producing an offspring, the rhino sub-species will soon disappear....

As gaming moves from just a casual pastime to becoming a more significant part of our lives, researchers are getting increasingly curious to find out how it affects learning. A 2011 Michigan study indicated that playing video games sparks imagination and fosters creativity. A more recent study concluded that gamers have better visual skills and other cognitive abilities. Now there is some evidence that gaming not only augments visual skills, but also, helps speed up the learning process....

At first sight, Elana Schlenker's pop-up store, Less Than 100, which was open in Pittsburgh during the month of April appeared just like any other gift store. However, when shoppers went to pay, they were in for a surprise. That's because while men paid full price, women received a 24% discount....

In this era when baseball fans flock to cheer their favorite players even during spring training, April 29th's game between the Baltimore Orioles and Chicago White Sox was a little unusual. That's because for the first time in the history of the four major American professional sports leagues the game was played in an intentionally empty stadium....