06 April 2013
10 Resolutions for Going Green with Your Family This Year
28 October 2010
6 Extremely Weird Plants
28 August 2010
Six perfect plants for dorm rooms
It doesn't at first seem logical to put a tree in such a notoriously cramped space, but a dwarf lemon tree can work in many dorm rooms. The trees can grow up to six feet tall in good conditions, so they might require a bit of pruning to keep them to a reasonable size. But it's worth the effort for the gorgeous yellow lemons that come all year and delicious citrus smell.
It's the hour before your chemistry final, and you're nervous to the point of nausea as you pour over your notes one last time. For an easy, natural, and healthy way to relieve the stress, look to mint. Crush or chew on a mint leaf to emit a strong aroma that can calm nerves, ease nausea and sore throats, and freshen breath by killing germs.
Lavender plants are colorful and fragrant and a great way to freshen up a dorm room. To spread the yummy lavender scent around the room, you can dry out flowers to make sachets for drawers and closets.
Consider your aloe vera plant your own personal pharmacy -- at least for skin irritations like sunburns. Just break open a leaf and squeeze out some liquid for instant relief. Aloe vera plants are perfect for rooms that don't get much sunlight (the leaves start to turn brown if they're in the sun too long), and don't require much watering.
African violets are the perfect dorm room flower. They're small enough to fit on a windowsill, don't require much water and can grow in a variety of temperatures. And the flower isn't just known for its beauty, it's also known to clean the air of pollutants to leave you with a healthier indoor environment. Buy African violet plugs at local nurseries or online.
Successfully taking care of a cactus is one of those out-of-the-classroom tests that helps you discover a little more about yourself. In this case, if it dies you'll know you're less nurturing than a desert. The only basic guideline: Don't overwater.
01 August 2010
Seven animals smarter than humans
1. Homing Pigeons
While most humans need several types of maps and a compass to find their way home after a long journey, the homing pigeon can return from extremely long distances (more than 1,100 miles) without any guidance.
Well, as a matter of fact, they do have some help: According to research by the University of Frankfurt, these pigeons have iron-containing structures in their beaks, which help them sense the Earth's magnetic field independent of their motion and posture, and thus identify their geographical position.
Research results this year indicate this magnetic charm is present in other birds as well.
Ants
Despite their size, the world's many varieties of ants have amazing skills. One of the most impressive is themycocepurus smithii from the Amazon, a super feminist species that has developed the ability to reproduce via cloning -- dispensing with both sex and males -- to evolve into an all-female breed.
According to research from the University of Arizona, it's not clear when the change happened, but by reproducing without sex, the ants avoid the energetic cost of producing males and double the number of reproductive females produced each generation.
For us humans, ants have also learned super efficient ways to organize their traffic. And 2006 research by the Berkeley University of California has established that the trap-jaw ant (odontomachus bauri) can close its mandibles at an incredible speed: The strike lasts 0.13 milliseconds, 2,300 times faster than the blink of an eye. This allows them to jump enormous heights for their size.
3. Elephants
They're huge, and sometimes they seem tired and slow. But it's no surprise that this mammal's peculiar nose is really something: Research from the University of St. Andrews suggests that elephants can keep track of up to 30 absent members of their family by sniffing out their scent and building a mental map of where they are. How useful would this little feature be for moms with several kids?
Even better, according to another study by the same University, elephants can tell whether a human is friendly or a threat by their scent and color of clothing. So good luck trying to fool them.
4. Termites
In Zimbabwe, the termite species Macrotermes michaelseni has developed a precise technique to farm a specific fungus they feed on. As this fungus can only grow at 87 degrees Fahrenheit, and temperatures outside range from 104 degrees Fahrenheit during day and 35 degrees Fahrenheit at night, the termites have come up with a system to keep the temperature steady in their mounds by constantly opening and closing heating and cooling vents.
This is such a useful idea that Loughborough University has conducted research in order to use the same technique in human buildings. Case in point - the Eastgate Centre in Harare, Zimbabwe has been modeled after the termites' system.
. Chimps
Much has been said about the intelligence of chimps, with some people claiming they're geniuses and others saying they're only as smart as a three year old kid. Of course, the actual facts fall in between.
But there is at least one area in which chimpanzees are smarter than humans -- photographic memory.A study by the Primate Research Institute at Kyoto University proves young chimpanzees have an extraordinary working memory capability for numerical recollection, better even than that of human adults tested with the same apparatus following the same procedure.
Presented with the same sequence of numbers, small chimps could recall them, outperforming humans. Not too shabby.
6. Crows
Contrary to the massive amount of animals and species facing extinction, crows are thriving, reproducing all over the world, with the small exceptions of the Arctic and the Southern tip of South America.
But, although they're proven to be smart in many ways (as Joshua Klein explains in this TED talk), officially scientists say they're not smarter than humans.
However, their amazing capacity for fast adaptation and ability to live in cities show they could be a lot more than they are today. And who knows, one day they might top us.
7. Dolphins
Ok, again, not officially smarter than humans yet, but dolphins have recently been declared the world's second most intelligent creatures (after humans). A zoologist from Emory University in Atlanta, Georgia, according to The Times,has even gone far to say that their "neuroanatomy suggests psychological continuity between humans and dolphins," and called for reconsideration of human-dolphin interactions. Another scientist from the Loyola Marymount University in Los Angeles has even called them 'non-human persons.'
So yes, dolphins are smarter than chimps and with communication skills similar to humans'. Their brains are only second in mass to the human brain, making them cultural animals with distinct personalities with the ability to think about the future, among other faculties.
16 July 2010
Nine myths and facts about lightning
14 July 2010
7 amazing auroras seen on Earth ... and beyond
The world's biggest light show
Bear Lake, Alaska
Kulusuk, Greenland
Kangaroo Island, Australia
Lapland, Finland
The Arctic
Canada from space
Jupiter
05 July 2010
7 Animals With the Longest Life Spans
First on the list are these large saltwater clams that are native to the Puget Sound and have been known to live for at least 160 years. They are characterized by their long ‘necks’, or siphons, which can grow to over 1 meter long.
The word “dinosaur” is commonly used to describe an old person, but when it refers to a tuataras, the term is as literal as it is metaphorical. The two species of tuatara alive today are the only surviving members of an order which flourished about 200 million years ago — they are living dinosaurs. They are also among the longest-lived vertebrates on Earth, with some individuals living for anywhere between 100 and 200 years.
These colorful deep sea creatures are tube worms (L. luymesi) that live along hydrocarbon vents on the ocean floor. They have been known to live 170 years, but many scientists believe there may be some that have lived for more than 250 years.
The red sea urchin or Strongylocentrotus franciscanus is found only in the Pacific Ocean, primarily along the West Coast of North America. It lives in shallow, sometimes rocky, waters from the low-tide line down to to 90 meters, but they stay out of extremely wavy areas. They crawl along the ocean floor using their spines as stilts. If you discover one, remember to respect your elders — some specimens are more than 200 years old.
Koi are an ornamental, domesticated variety of the common carp. The are common in artificial rock pools and decorative ponds. Amazingly, some varieties are capable of living more than 200 years. The oldest known koi was Hanako, a fish that died at the age of 226 on July 7, 1977.
Tortoises are considered the longest living vertebrates on Earth. One of their oldest known representatives was Harriet, a Galapagos tortoise that died of heart failure at the age of 175 years in June 2006 at a zoo owned by the late Steve Irwin. Harriet was considered the last living representative of Darwin’s epic voyage on the HMS Beagle. An Aldabra giant tortoise named Adwaita died at the rumored age of 250 in March 2006.
The ocean quahog (Arctica islandica) is a species of clam that is exploited commercially. Researchers have interpreted the dark concentric rings or bands on the shell as annual marks, much like a tree has rings. –Some collected specimens have been calculated to be more than 400 years old.
5 Tips for Teaching Kids to Care for the Environment
03 July 2010
Top 10 Countries Killing the Planet
Although Peru hardly seems capable of the harmful environmental impact that larger industrialized countries are capable of, the South America country ranks number 10 overall of countries creating negative environmental impact. Of 179 countries, Peru ranks 2nd for marine capture and 7th for threatened species. Over fishing and illegal trade of endangered species seem to be the culprit: Convention on International Trade in Endangered Species (CITIES) lists ten animal species as critically endangered (like the short-tailed chinchilla pictured above) the last step before extinction, 28 as endangered, and 99 as vulnerable in Peru.
About 11.5 percent of the the total land area of Australia is protected, which leaves a lot left (although much of it is arid desert) for unbridled usage, which is how the country ranks 7th worst in habitat conversion. It also ranks 9th for fertilizer use, and 10th for natural forest loss.
Less than half of Russia’s population has access to safe drinking water. While water pollution from industrial sources has diminished because of the decline in manufacturing, municipal wastes increasingly threaten key water supply sources, and nuclear contamination poses immense problems for key water sources as well–landing Russia in 4th place for worst water pollution. Russia ranks 5th in worst CO2 emissions–air quality is almost as poor as water quality, with over 200 cities often exceeding Russian pollution limits. The country ranks 7th for marine capture.
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