Tuesday, 8 May 2012

The Stream : The future of drone technology



As drones become cheaper and more accessible, we examine its technological advantages as well as privacy concerns.

Guests: Josh Rushing, Ryan Calo

Thumbnail image: REUTERS/Joe Skipper

List of search engines

Friday, 4 May 2012

BBC Horizon : How Violent are You?


Running Video Time: 59m:42s
What makes ordinary people commit extreme acts of violence?


In a thought-provoking and disturbing journey, Michael Portillo investigates one of the darker sides of human nature.  He discovers what it is like to inflict pain and is driven to the edge of violence himself in an extreme sleep deprivation study.


He meets men for whom violence has become an addiction and ultimately discovers that each of us could be inherently more violent than we think, and watches a replication of one of the most controversial studies in history, the Milgram study.  Will study participants be willing to administer a seemingly lethal electric shock to someone they think is an innocent bystander?

BBC Horizon : How to live to 101

Running Video Time: 48m:58s
The quest to live longer has been one of humanities oldest dreams, but while scientists have been searching, a few isolated communities have stumbled across the answer.  On the remote Japanese island of Okinawa, In the Californian town of Loma Linda and in the mountains of Sardinia people live longer than anywhere else on earth.


In these unique communities a group of scientists have dedicated their lives to trying to uncover their secrets.  Horizon takes a trip around the globe to meet the people who can show us all how to live longer, healthier lives.

BBC - Horizon - The Truth About Vitamins


Running Video Time: 49m:08s
The Truth About Vitamins (2004)
Are vitamins doing us any good? Could they even be dangerous?

Every year we spend £300 million on vitamin supplements, but do they actually do us any good? Some believe they offer the promise of preventing or even curing some of the world's biggest killers, such as heart disease and cancer. Others claim that taking large doses of some vitamins may in certain cases be harmful.  So what are the facts?

Vitamin C, the most popular of them all
Nearly 40 years ago, one of the greatest scientists of the 20th century and double Nobel Prize winner, Linus Pauling, revolutionised the way people thought about vitamins.  He claimed that by taking huge doses of vitamin C you could prevent or even cure the common cold.

He predicted that if everybody followed his advice, the common cold could even be eradicated.  Many scientists dismissed his theory as quackery, but the public loved it and it helped launch a huge industry.  But the latest evidence shows the great man was mistaken. Vitamin C can help you once have got a cold, but for most people it does nothing to prevent you from catching one in the first place.

Even if large doses of vitamin C do not prevent the common cold, some claim that it can still offer a more profound benefit.  It is one of a group of vitamins called anti-oxidants that some believe can prevent illnesses such as cancer, Alzheimer's and heart disease.

Too much of a good thing?
In 2004, scientists in the United States claimed that people could be missing any of the potential benefits of taking one of the world's most popular anti-oxidant vitamin supplements, vitamin E, because their bodies might not be absorbing it.  But our own investigation suggested that the American scientists' conclusion could be mistaken.

While most safety experts believe that vitamins C and E can be taken safely even in quite large doses, there is worrying evidence that one form of another common vitamin, vitamin A, could be linked to osteoporosis, a debilitating bone disease.

If the theory is right it means that a person's diet, or some supplements that they take every day to improve their health, could actually be slowly and silently weakening their bones

BBC Horizon : How to make better decisions




Running Video Time:48m:48s
According to science: We are bad at making decisions. Our decisions are based on oversimplification, laziness and prejudice. And that's assuming that we haven't already been hijacked by our surroundings or led astray by our subconscious!

Featuring exclusive footage of experiments that show how our choices can be confounded by temperature, warped by post-rationalisation and even manipulated by the future, Horizon presents a guide to better decision making, and introduces you to Mathematician Garth Sundem, who is convinced that conclusions can best be reached using simple maths and a pencil!