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Penguins are   feathered  birds , but they are, differently  feathered. Because they spend so much of their lives in the water, they keep their feathers slicked down and waterproofed. Penguins have a special oil gland, called a preen gland, that produces a steady supply of waterproofing oil. A penguin uses its beak to apply the substance to its feathers regularly. Their oiled feathers help keep them warm in the frigid waters, and also reduce drag when they're swimming.  Like other birds, penguins molt old feathers and regrow replacements. But instead of losing some feathers at different times throughout the year, penguins do their molting all at once. This is known as a catastrophic molt . Once each year, the penguin bulks up on fish to prepare for its annual changing of the feathers. Then, over a period of a few weeks, it molts all of its feathers and grows new ones. Because its feathers are so vital to its ability to survive in cold waters, it makes sense for a pe

One of the most basic terms that everyone learning how to use the Web needs to know is homepage. This term can mean a few different things on the Web, depending on what context it's being discussed in.  If you think of a home page serving as the basic introduction and site index (overall home base of a website that shows the site structure, navigation, associated pages, links, and al l other elements related to the infrastructure of a website) of the entire website it represents, you would be correct. A home page should have a few basic elements in order to be truly useful; these include a clear home button or link that helps users find their way back to the home page from anywhere in the site, user-friendly navigation to the rest of the website, as well as clear representation as to what the website is all about (this could be a home page, an About Us page, an FAQ page, etc.). The main page of a Web site is called the "home page". An example

Now   people  are turning to the Web for entertainment,  including  movies, TV shows, and videos. Some  sites are the best on the Web for finding all sorts of multimedia, anything from documentaries to classic TV shows to action-packed movies  made for popcorn and soda. These are free resources that anyone can use. Here  are  some&nbs p; sites   that  you  can  enjoy  on  the  net. Surf The Channel: Surf The Channel is a great source for hundreds of different shows in a wide range of categories. It's a video search engine, so you can use it find movies, TV shows, videos, short films, and animation – all in the same place. IMDB: IMDB, also known as the Internet Movie Database, has added free full length movies and TV shows to its already large and informative site. You can also use IMDB to look up information about any actor: upcoming movies, current projects, images, and movie trailers.   PublicDomainTorrents: Public Domain Torrents is a goldmine o

SCIENTISTS    have  designed   a   paint  on  see-via,  smart   bandage  that   glows  to  indicate  a  wound's   tissue    oxygenation    concentration . The   smart   bandage  created by  an  international , multidisciplinary  group  of  researchers  ,led  by  assistant professor Connor L.Evans  at  the   Wellman  center  for  photo medicine   of   Massachusetts   Basic  Hospital(MGH  )  and  Harvard   Healthcare  College(HMS ,  provides   direct,  noninvasive    measurement  of   tissue  oxygenation   by  combining  three   simple  , compact   and  economical  components ;a  bright  sensor  molecule   with  a  lengthy   phosphorescence   lifetime and  proper  dynamic  range  a bandage   material   compatible  with  the  sensor   molecule   that  conforms  to  the  skin's surface    to  form  an  air tight  seal    and  an   imaging   device  capable  of   capturing  the    oxygen-  dependent   signals   from  the  bandage  with  higher  signal

According   to  a  new   research  ,fast  food  affects   not  only   children's  general  health  but  it also  slows  down  their  brain. The   researchers  found  that    children  who   eats   most  fast  food    score  less  in  test   for,  math,  science    and reading. Lead  researcher   Kelly  Perter   from  the Ohio  State  University    in  the  US  ,who  conducted  the  research  said ,"Our   findings   provide evidence  that  eating  fast  food  is linked  to  another  problem:Poorer   academic outcomes." Researchers    suggested  that  lack  of  iron    in  the  fast  food   leads  to   a  slowing    in development  of certain   processes   in  the  brain. Another  idea   is  that diet   high  in   fat  and  added    sugar   have  a  negative  impact   on   the learning  process. The  research  used  data  from  a  national   representative   sample   of  8,500   school  children  from  US ,whose  fast food  consumption    was  measur

The  United  State   Department   of defense  has  successfully    tested  a  bullet  that can  change  direction ,  after  it  has  been  fired ,using  Fins  built  into  the  shell   to  direct it  into  the  air  and  account  for  wind and   targets   moving. The   extreme    Accuracy  Tasked  Ordnance  Weapon ,  known  as    Exacto      is  made  by  American  Industrial  company  Teledyne   Technologies .  The  firm    is  making  the  bullet  for  the  American    government's  military  research  agency  Darpa. In  a  video   made  by  the  company  shows   the  bullet  being  fired   twice ,deliberately   off  target . The  second time  it  swing back   in  towards   the  target and    hits, DAR PA ,  the research  arm  of  Pentagon  has  developed  the  EXACT O system   to  put  a  four  inch-  long-bullet     with  an  optical laser   sensor and  an  eight  bit   central  processing   that  can  compute  an  algorithm    to  command   electrom

Life in zero gravity is much different than life on Earth.  We   get to enjoy both the taste and the smell of drinking hot coffee from a mug. Astronauts on the International Space Station don’t have this luxury and must drink their coffee using a straw that draws the liquid out of a closed container. This diminished coffee experience may change for the astronauts thanks to a new 3D-printedcup designed to help NASA study the behavior of fluids in micro-gravity. The idea for studying coffee and other liquids consumed in space surfaced after Italian European Space Agency astronaut Samantha Cristoforetti received an espresso machine. The opportunity to study capillary flow, liquid containment, and low-gravity fluid dynamics was too great to pass up. A team of researchers was assembled by NASA, and they went to work designing six different transparent polymer cups for use on the space station.  Five of the cups hold 150ml, while the sixth, a smaller 60ml vessel, was d