You might have read in physics, the carnot law - which says however hard you may try you can't convert al heat into energy and sets a theoritical limit on the efficiency of conversion of heat into energy. All modern/ancient/medival (any era's) heat engines efficiency is far less than that. May be some one-tenth of the limit set by carnot efficiency. Now MIT students say their research can lead to an efficiency upto 90 % of carnot limit, confirmed by experiments involving a different new technology, thermal diodes (demonstrated upto 40% of carnot eficiency as of now) .

In the digital era, where cameras have become a house hold thing , many people are now capable of covering breaking news. So the way we are watching news is changing day by day. We can experience it in elections, natural disasters, human disasters. Almost any event happens in todays world has a chance of getting coverd up. To take this a step further Google has came up with "youtube direct" ...

A three-day United Nations summit on world food security opened in Rome today, with Secretary-General Ban Ki-moon warning that on this day alone more than 17,000 children will die of hunger – one every five seconds, 6 million a year – even as the planet has more than enough food for all...

Orkut, Facebook, twitter, Myspace, LinkedIn, Hi5, Friendster .. these are the social networking sites which I am using right now. You may be member of more or less - but if one is on net , then 99 % chances are there that they are member of atleast one social network. But all members on Social Netowrking sites are not genuine , some hackers, crackers will always be there.

With social networking sites attracting millions every month, the risk of virus attacks, account hijacks and spam mounts...

Over one billion people – a sixth of humanity - don’t have enough to eat. Almost a third of the world’s children are growing up malnourished. This is  perhaps one of the most shameful achievements of recent history, since there is no good reason for anyone to go hungry in today’s world.

In this scenario, it is required to assess how governments are performing in their fight against poverty..

The argument that the moon is a dry, desolate place no longer holds water. NASA again reiterates the confirmation of water on moon surface. And is planning for more surprising news, with lot of data that got piles up from LCROSS

While the “digital divide” between rich and poor countries may be shrinking overall, the gap is widening between the developed and developing worlds in the availability of broadband or high-speed Internet, a crucial tool for achieving economic and social goals, a top United Nations official said ...