Author Archives: Mary-ann

The Decrease in Glacial Dust Storms Accentuates

From Patagonia to Iceland’s shrinking glaciers, exposes soil from rising dust storms affecting marine life and the global climate, according to a recent study. “The growing presence of mineral aerosols at high latitudes is surprising,” said Joseph Prospero, a researcher at the University of Miami, who for decades has investigated the effect of dust on the global environment.

Prospero’s investigations have established that the dust that rises from tropical regions of Africa is transported much of southern and eastern United States each summer (northern hemisphere) and causes 75 to 80 percent of the dust that falls on Florida.

It goes back to glacial periods. This phenomenon is not only contemporary and sediment samples in the ground and deep ice show increases in activity of dust associated with the ice ages. “There is therefore considerable interest in the global distribution of dust sources, factors affecting dust emissions and the properties of the emitted particles,” said Prospero, who over the years has established over two dozen observation stations around the globe.

The research that Prospero has developed over the past six years in Iceland, has determined that “there are large dust storms that originate there and move north Atlantic Ocean.”

According to the researcher, a substantial increase in dust activity in Iceland as glaciers decrease due to global warming. “In a hundred years, there will be no glaciers there,” said Prospero.

The dust itself contributes to increasing the rate of decline of glaciers explained the scientist. “When the glaciers are strong and ‘clean’, color is white, bright, light refractory,” he said. “But when they start to gather dust in their grooves in the top of the glacier, it absorbs more heat from sunlight and melting more quickly.”

Prospero and his colleagues spent six years studying the island of Heimaey, South Iceland and taking measurements of dust particles, or aerosols in the air. The researchers identified frequent episodes of dust production in the region, which in some cases reach 20 micrograms of particles per cubic meter, and found that dust emissions from the island tend to be higher in the spring.

15 Interesting Animal Facts

 

 

1. The alligator can close its jaws strong enough to break the arm of a person, but the muscles that open are so weak that he can keep his mouth shut with one hand.

2. The Koala sleeps more than any other animals. It sleeps no less than 22 hours a day.

3. The bees are born, live and die at the same size.

4. The whale shark has more than 4,500 teeth.

5. A canary’s heart beats one thousand times per minute.

6. Flies have about 15,000 taste buds.

7. The crocodile’s brain is the size of a thumb.

8. While the man has over 600 muscles, a caterpillar has over 2,000.

9. Ostriches never bury their heads in the sand, as what we see in cartoons.

10. Pigs are unable to bury their heads due to its anatomical structure.

11. Rats multiply so quickly that in just a year and a half, two rats could have over a million descendants.

12. The “quack” of a duck does produce an echo. Urban legend says “no”.

13. You can lead a cow up some stairs, but do not down because a cow’s knees cannot bend in a proper way to walk downhill.

14. A cockroach can live more than a week without a head, dying of hunger over time.

15. On arrival of a British man to Australia, he was amazed by the sighting of a kangaroo (an animal that was not yet discovered at the time). They called a native and repeatedly tried to ask the animal’s name using signs and jumping gestures. Noting that the Indian always said “Kan Chu Ru”, they referred to the animal as “Kangaroo” (Kangaroo). Linguists later determined that the meaning of what the natives told him was “I do not understand.”