An amateur video of an amazing animal confrontation on the African savannah is fast becoming one of the biggest hits on video-sharing website YouTube.

The footage first shows how several lions attack a group of buffalo, snatching a buffalo calf.

As the lions wrestle with a calf by a watering hole, a crocodile joins in the battle, pouncing on the buffalo.

The lions win the tug-of-war, but then the buffalo herd returns, chasing away the lions and freeing the calf.

From 1 pm - 5 pm EST, our bloggers will be at work, chatting about the action on the TV screens. Feeds will come in from around the world, and we'll throw some opinions out there. Who rocks harder, Foo Fighters or Fall Out Boy? Who has more stage presence, Madonna or Shakira? Figure it out and get back to us on Saturday.

On June 13, Michael O. Leavitt, Secretary, U.S. Department of Health and Human Services, convened a leadership forum on pandemic preparedness, which brought together highly influential leaders from the business, faith, civic and health care sectors to discuss how best to help Americans become more prepared for a possible influenza pandemic. The Department is hosting this five-week blog to expand the conversation as part of an ongoing effort by the Department to help Americans become more prepared. HHS does not edit blog postings and cannot ensure that all included links are functioning. We apologize for any inconvenience.

"Enough about the climate problem. Let's talk climate solutions." Thus begins the new blog by Amory Lovins on Yahoo! Green. Prepare to have your assumptions turned on their heads as the co-author of Natural Capitalism and founder of the Rocky Mountain Institute shows us how "protecting the climate is not costly but profitable."

Mr. Lovins has done pioneering work in the field of radical resource efficiency, which he sees as the first step towards a sustainable world. This YouTube video gives a great overview of the man and his work.

How do you put a price on your Dream? Is it worth one month's salary? Is it worth one year's salary? Is it worth your child's college savings account? Is it worth all your retirement money? Is it worth losing a limb? Is it worth dying for? What is the right price for a dream?

I don't have an answer for it. But I believe it is different for every person. For me, I was ready, and still am, to give my life for my dream. Someone once asked me, "Would you go, knowing all the dangers?"

I said I would go if I knew with certainty that it would not be a one-way ticket. Russian Space Agency might not be interested in my life, but they are interested in my money ;-)

CBC.ca's Technology & Science section covers the latest advances in technology and science, with a focus on how technology and science are transforming the way Canadians live.

The section will help Canadians keep abreast of developments in the fast-paced tech and science world by reporting on the latest innovations, cutting-edge gadgets and games, and by analyzing the effect of technology on all our lives.

Technology & Science will feature a new blog from the crew at CBC Radio's well-known show Quirks and Quarks, as well as regular contributions from award-winning science writer Stephen Strauss, formerly of The Globe and Mail. The section also gives readers the opportunity to share their own tips and opinions.

Thanks to the growing number of expeditioners who are using blogs to chronicle their adventures, now the bravery, hardship and extreme challenges are just a click away.

But first they must master the vagaries of blogging equipment in environments so treacherous that sometimes even breathing is difficult.

"But when the Wall Street Journal tried to find the guy who posted this film — listed on YouTube as a 29-year-old — they found the movie didn't come from an amateur working out of his basement," report Jake Tapper and Max Culhane for ABC News. "The film actually came from a slick Republican public relations firm called DCI, which just happens to have oil giant Exxon as a client."

"So next time you're reading something on the Internet from a supposedly 'real person pushing a movie, defending an actor, talking about a politician, keep in mind that it might not actually be a real person but a corporate hired gun, selling you an idea through deception," Tapper warned in the ABC News segment.

A DCI Group spokesman declines to say whether or not DCI made the anti-Gore penguin video, or to explain why Toutsmith appeared to be sending email from DCI's computers. "DCI Group does not disclose the names of its clients, nor do we discuss the work that we do on our clients' behalf," says Matt Triaca, who heads DCI's media relations shop.

Dave Gardner, an Exxon spokesman, confirms that Exxon is a client of DCI. But he says Exxon had no role in creating the "Inconvenient Truth" spoof. "We, like everyone else on the planet, have seen it, but did not fund it, did not approve it, and did not know what its source was," Mr. Gardner says.

Traffic to the penguin video, first posted on YouTube.com in May, got a boost from prominently placed sponsored links that appeared on the Google search engine when users typed in "Al Gore" or "Global Warming." The ads, which didn't indicate who had paid for them, were removed shortly after The Wall Street Journal contacted DCI Group on Tuesday.

The company blamed the closure on record-breaking heat in Los Angeles where its data servers are held.

The high temperatures caused "massive power outages" a spokesman for the company said.

MySpace lets users build a personalised home page and has almost three million visitors each month.

A MySpace spokesperson said: "Due to the record breaking heat in Los Angeles over the weekend the area where MySpace's servers are stored had massive power outages.

"With power resumed, the network is now up and running."

Hugg is a new project by TreeHugger - a source for user-generated green news. What does this mean? It's simple - how many times have you found an article, a video or a website that you've wanted to share with all your green friends? Well, Hugg lets you to share this stuff with everyone. Plus, it lets other users rate shared stories by Hugging them. All posts start out in the queue. Each time a story is Hugged, it climbs the ranks. If a story gets enough Huggs, it jumps up to the front page where it can be seen by everyone who visits. Step by step instructions on how to add your news is found on the Submit page. Hugg is a place to post and harvest the latest on green architecture, transportation, fashion, alternative energy, politics, products and technology. It's green media, by you, for you!

Believed to live in swamps, the ninki-nanka appears in the folklore of many parts of West Africa.

It is described as having a horse-like face, a long body with mirror-like scales and a crest of skin on its head.

Team leader Richard Freeman told the BBC, evidence so far was sketchy as most people died soon after seeing it.

When I said I was going to a press screening of "An Inconvenient Truth," a friend said, "Al Gore talking about the environment! Bor...ing!" This is not a boring film. The director, Davis Guggenheim, uses words, images and Gore's concise litany of facts to build a film that is fascinating and relentless. In 39 years, I have never written these words in a movie review, but here they are: You owe it to yourself to see this film. If you do not, and you have grandchildren, you should explain to them why you decided not to.

Dutch evangelical Christians are to hold a round-the-clock prayer vigil to ward off the forces of evil on Tuesday - the so-called Devil's Day.

They believe that the sixth day of the sixth month of 2006 has great significance for evil-doers and Satanists who revere the number 666.

*****

The reference to 666 is taken from the Biblical book of Revelation, which talks about the events leading to the end of the world.

Revelation 13:18 states: "If anyone has insight, let him calculate the number of the beast, for it is man's number. His number is 666."

The website features a blog with regular postings from conservators who are spending the Antarctic winter preserving Ernest Shackleton's hut. They will be updating the blog with their stories and pictures to raise awareness of this important preservation project.

The team of conservators, Sarah Clayton, Nicola Dunn and Ainslie Greiner, will be living for seven months in the harshest conditions the world has to offer, including hurricane-force winds, 24-hour darkness and temperatures that reach minus 47 degrees Celcius at night. You can follow their daily challenges through the team's Antarctic conservation blog.

The website highlights the history of scientifc research in the Antarctic that began in the early years of the last century when explorers were racing to reach the South Pole.

Now some scholars are proclaiming these rapidly rising media and information platforms as potentially potent tools for science.

"It would be great if top scientists who are experts in their field did contribute to the debates that are going on and put their ideas across," said Alison Ashlin, a doctoral candidate at the Oxford University Centre for the Environment in Great Britain.

Ashlin is an environmental scientist, and in the current issue of the journal Science she cites her own field as a prime example of the need for more accurate blogs fuelled by top researchers.

"Currently, there are roughly 400,000 weblogs featuring discussions on environmental and conservation-related issues, which makes it difficult to assess the general quality of scientific information on weblogs," she wrote in her paper.

"That library contains not only everything that's true but everything that's false-so there's a lot of absolute junk information out on the Internet, and it's really critical for there to be some way for people to find out which sites are reliable."

Pierrehumbert believes that if more scientists produce better blogs, the online community will exercise its own quality control.

"The Net seems to have a kind of self-organizing peer review," he said. "The word gets around if blogs are full of junk, and then people stop looking at them."

The blog was the brainchild of Alex Georgiev, a graduate student in anthropology who was working with Gilby last fall to update the Kibale Chimpanzee Project's Web site. Georgiev argued that the Web site ought to have changing features that bring people back again. The blog was one way to do that, Gilby said. Web site statistics through March 9 show that the site has been viewed some 2,800 times.

In addition to drawing people to the Web site, however, Gilby said the blog is a new way for scientists to communicate to the public. Details of the life of a field scientist are typically missing from the scientific papers summarizing research findings. An account of what chimpanzees are like when you're sitting next to them may give readers an entirely different feeling about the animals than they would get from reading about the latest discovery of chimp behavior or anatomy.

"It's important for chimpanzee conservation, even though that's not the primary goal of our research," Gilby said. "If a reader suddenly feels like they made a connection, maybe that's one more reason for them to give money to an organization that protects chimpanzees."

The pigeon bloggers are due to be released at the Inter-Society for Electronic Arts annual symposium in San Jose on 5 August. The data they send back will be displayed on the blog in the form of an interactive map.

As well as providing local residents with real-time data on air quality, da Costa hopes the pigeon blog will inspire people to come up with new ways to monitor the environment.

The pigeons will also carry cameras around their necks and post aerial photos to the blog, the magazine says.

The Times-Picayune is evacuating it's New Orleans building.

Water continues to rise around our building, as it is throughout the region. We want to evaucate our employees and families while we are still able to safely leave our building.

Our plan is to head across the Mississippi River on the Pontchartrain Expressway to the west bank of New Orleans and Jefferson Parish. From there, we'll try to head to Houma.

Our plan, obviously, is to resume providing news to our readers ASAP. Please refer back to this site for continuing information as soon as we are able to provide it.

WWL-TV studios are being evacuated as rising water is coming into the station. The French Quarter is taking on water and water is expected to rise in the city for the next few days.

The Commissioned Corps of the US Public Health Service, the nation's uniformed force of health professionals, has just been mobilized. The US Northern Command is in charge of the military response. Soldiers are setting up triage centres, anticipating overflowing emergency rooms and morgues. Images are coming in of tent cities being erected in New York's Central Park. Wards are being installed in schools and churches. Troops are on the streets. "There's going to be civil unrest," a general informed me on the phone this morning.