Nuclear weapons: Who has how many

The world, they say, is becoming a more dangerous place by the minute. With the nuclear weapons race adding to the alarming scenario, ever wonder just how what kind of nuclear arsenal exists the world over? But we'll get to that in just a minute. Meanwhile, India is all set to enter a select league of nations with missile capability to hit targets 5,000 km away as it gets ready to test Agni-V long-range, nuclear-capable, ballistic missile on Wednesday. Agni-V can strike deep into Asia and Europe, a move that will give access to New Delhi into a small club of nations with intercontinental defence capabilities. Only the permanent members of the U N Security Council - China, Russia, France, the United States and the United Kingdom - and Israel are believed to have such long-range missiles. The launch will be closely monitored by India's nuclear-armed rivals China and Pakistan and other Western nations, but is unlikely to draw the kind of criticism aimed at North Korea after its own failed long-range rocket launch. Now back to what we began with: just how many nuclear weapons do the nuclear powers across the world have, individually? Read on to find out...

Space shuttle Discovery's final voyage

The space shuttle Discovery took off on its final voyage, on a piggyback jet ride to the Smithsonian National Air and Space Museum's Virginia annex. The United States retired its space shuttles last year after finishing construction of the $100 billion International Space Station, a project of 15 countries, to begin work on a new generation of spaceships that can carry astronauts to destinations beyond the station's 240-mile-high (384-km-high) orbit. For its last ride, Discovery took off not from its seaside launch pad but atop a modified Boeing 747 carrier jet that taxied down the Kennedy Space Center's runway at dawn. The shuttle's tail was capped with an aerodynamically shaped cone and its windows were covered.

Doctors fight to save life of six-legged baby.

Pakistani doctors are battling the odds to save a newborn baby born with a rare genetic condition that has left him with six legs.Baby was one half of a conjoined twin who did not completely develop in the womb.Birth defects like the Mermaid syndrome, a deformity where the legs are fused together, Craniopagus, a phenomenon where twins are joined at the head, and Dicephalic parapagus, a condition of having two heads, occur rarely but prove challenging to the medical world.More images on these rare congenital disorders.

Possible human remains at Titanic site

In observance of the 100th anniversary of the ship's sinking, a 2004 image was reissued to the public in an uncropped version, which shows a coat and boots buried in the mud at the site two-and-a-half miles below the ocean's surface, where the legendary passenger liner now lies.