

Photograph by: Jawad Haddadin
Non-drinking water kills 8 millions persons a year.
Advertising Agency: Sudler & Hennessey, Mumbai, India

All types of Music.Advertising Agency: Master, São Paulo, Brazil
Creative Directors: Luciano Toaldo, Claudio Freire
Art Director: André Macena
Copywriter: Marcelo Romko
Photographer: Fernando Ziviani
Published: January 2008
Explanation: This colorful view of the western sky at sunset features last Wednesday's slender crescent Moon. Of course, when the Moon is in its crescent phase it can never be far from Sun in the sky. Also always close to the Sun in Earth's sky is innermost planet Mercury, seen here below and right of center against the bright orange glow along the horizon. Mercury is usually difficult to glimpse because of the overwhelming sunlight, but increasingly better views of the small planet near sunset will be possible as it wanders farther east of the Sun in the coming days. On January 14th, NASA's MESSENGER spacecraft will have a good view too, as it makes its first Mercury flyby.
The calendar says January 10th but the plants say middle of March. Climate craziness is sending usually clockwork plant systems into confusion as Germany experiences a blast of early spring. Temperatures which have been in the low single digits for the past month or so suddenly leapt into double figures this week, dragging some sleepy blooms from their winter rest. They, as will the people of Germany, will get a shock next week, however. Temperatures are expected to plummet again, forcing the population to grab their jackets again and the plants to battle on against the unpredictability of the seasons.
Explanation: A mere 11 million light-years away, Centaurus A is a giant elliptical galaxy - the closest active galaxy to Earth. This remarkable composite view of the galaxy combines image data from the x-ray ( Chandra), optical(ESO), and radio(VLA) regimes. Centaurus A's central region is a jumble of gas, dust, and stars in optical light, but both radio and x-ray telescopes trace a remarkable jet of high-energy particles streaming from the galaxy's core. The cosmic particle accelerator's power source is a black hole with about 10 million times the mass of the Sun coincident with the x-ray bright spot at the galaxy's center. Blasting out from the active galactic nucleus toward the upper left, the energetic jet extends about 13,000 light-years. A shorter jet extends from the nucleus in the opposite direction. Other x-ray bright spots in the field are binary star systems with neutron stars or stellar mass black holes. Active galaxy Centaurus A is likely the result of a merger with a spiral galaxy some 100 million years ago.
أعلن بيل غيتس أنه سيتفرغ للعمل في مؤسسته الخيرية التي تحمل اسم "مؤسسة بيل وميليندا جيتس". وكانت شركة ميكروسوفت قد قالت إن الخطاب الافتتاحي الذي ألقاه جيتس أمس الأحد في معرض مستهلكي الالكترونات قد يكون الخطاب الأخير له في قيادة الشركة.
مزيد من المعلومات، آنقر هنا
Explanation: Why does Jupiter have rings? Jupiter's rings were discovered in 1979 by the passing Voyager 1 spacecraft, but their origin was a mystery. Data from the Galileo spacecraftJupiter from 1995 to 2003 later confirmed that these rings were created by meteoroid impacts on small nearby moons. As a small meteoroid strikes tiny Adrastea, for example, it will bore into the moon, vaporize, and explode dirt and dust off into a Jovian orbit. Pictured above is an eclipse of the Sun by Jupiter, as viewed from Galileo. Small dust particles high in Jupiter's atmosphere, as well as the dust particles that compose the rings, can be seen by reflected sunlight. 
Explanation: Dust from curious near-Earth asteroid 3200 Phaethon seems to fall from the constellation Gemini in this fisheye skyview. The composite image was recorded over four December nights (12-15) just last year from Ludanyhalaszi, Hungary. Of course, the streaks are meteor trails from the annual Geminids meteor shower. The work of astronomer Erno Berko, the finished picture combines 113 different frames and captures 123 separate meteors. The Geminids is one of the northern skies most reliably performing meteor showers and did not disappoint last year. Under good conditions some skywatchers reported well over 100 meteors per hour near the December 14/15 peak for the Geminids in 2007. Look up tonight and you might see the 2008 Quadrantids.

For many women the threat isn't on the outside.January 1, 83 TCP/IP
This article gives a more in-depth look at what TCP/IP is. It was established as an ARPANET standard on January 1, 1983.
TCP/IP:
IP - is responsible for moving packet of data from node to node. IP forwards each packet based on a four byte destination address (the IP number). The Internet authorities assign ranges of numbers to different organizations. The organizations assign groups of their numbers to departments. IP operates on gateway machines that move data from department to organization to region and then around the world.
TCP - is responsible for verifying the correct delivery of data from client to server. Data can be lost in the intermediate network. TCP adds support to detect errors or lost data and to trigger retransmission until the data is correctly and completely received.
Sockets - is a name given to the package of subroutines that provide access to TCP/IP on most systems. (Yale.edu)
There are many layers built ontop of TCP/IP. And another protocol called UDP, which is predominatly used in games and other networking situations where low-latency is required is completely different.
The major layers on top of TCP/IP are:
HTTP: Hyper Text Transfer Protocol (for requesting webpages)
FTP: File Transfer Protocol (for uploading files to websites)
SMTP and POP3: For sending (SMTP) and receiving (POP3) e-mail
IRC: For chatting online
There are also many-non standard protocols built on top of TCP/IP. For instance, AOL Instant Messenger uses a third-party protocol to transfer chat messages between clients!