Professor Michael B. McElroy introduces the worldwide experiment we have embarked on through the increase in global temperature. He also puts humanity and global warming in the context of Earth's entire history going back 4.5 billion years ago. Here's an excellent introductory lecture for placing global warming in global history.

In Fingerprints of the Gods Graham Hancock embarks on a worldwide quest to put together the pieces of a vast and mysterious jigsaw-puzzle of mankind's prehistory. He reveals not only the clear fingerprints of an unknown people who flourished during the last ice age, but also disquieting signs of high intelligence, technological sophistication.

How well do you know the Earth and Universe? Why does the Moon's appearance from Earth change over time? How big is our universe, and how has it changed over time? Explore these questions and more with these interesting clips to inform the public and develop social consensus around this exciting opportunity with respect to our future.

The structures that lie beneath our skin represent a remarkable and beautiful assortment of biological machines essential for our lives. Often, however, we take these structures for granted. Here are the clips that describe the wonders of the human body.

Nicole "Snooki" Polizzi is a cast member on the MTV reality show Jersey Shore. She is an aspiring veterinary technician. Snookilicious is the center of controversy when a man punches her in her face during a bar confrontation. For her she's the real guidette.

Sammi "Sweetheart" Giancola is one of the cast members of the MTV docu-soap Jersey Shore. Hailing from Hazlet, N.J., she enters this experience with the sole intent of having fun. When it comes to relationships, Sammi is described by her friends as a "heartbreaker."

Jenni Farley, aka JWoww, is a graphic designer and club promoter from Franklin Square, New York, who stars on MTV's Jersey Shore. She refers to herself as a praying mantis when it comes to her relationships with men. Listen to her clips here.

Paul Delvecchio, better known as DJ Pauly D, is one of the members of MTVs overnight reality sensation Jersey Shore. He has received as much attention for his hair style as his housemates have for their partying and fighting. This Rhode Island native is a music dj too and may have a bright future at the local Hair Cuttery!

Peppy is a half human half hare character, who is effectively the senior member of the Star Fox team. Peppy is often the pilot that advises Fox on what course of action to take, and sometimes makes references to his past. He has been voiced by Isaac Marshall in the English version of Star Fox 64.

Another year had close and you know what that means. It's time to wrap up a year of hilarity with our picks for the best viral videos of the year. From flubs and freakouts to mishaps and mayhem, these are the videos that guys just couldn't stop watching in 2009.

2009 was quite nasty, to say the least. The nastiness was escalated due to the apparent lack of stability of any kind. Perhaps this is why there have been so many celebrity break-ups and fallouts last year. Check out the top 10 break-ups that created a lot of media attention and most of these breakouts were completely different from the regular one

One of the film Hoodwinked's most memorable characters is Twitchy, who is brilliantly voiced by director Cory Edwards. The hyperactive squirrel is used sparingly throughout the film, stealing each scene he appears in.

Vinny Guadagnino came from a traditional Italian family in Staten Island, N.Y., to find fame on MTV's Jersey Shore. He is a good mommas boy who sports an immaculately groomed pair of eyebrows. Vinny is the quietest of the bunch.

Angelina Pivarnick is a New York City bartender, and is a girl who stars on Jersey Shore on MTV. This girl calls herself as "the Kim Kardashian of Staten Island " due to her "all natural" figure. A very outspoken individual, she causes conflicts within the shore house primarily between male castmates.

MTV has created a media sensation with its hair-gel-filled Jersey Shore show that uncovers sometimes surprising, often hilarious and usually over-the-top personalities as they juggle work, love, nightlife, friendship and the drama that ensues. They are also part of a subculture called Guidos (men) and Guidettes (women).

Ronnie Magro from Jersey Shore is your classic troglodyte Guido with a penchant for pumping iron and an aversion to shirts. He is basically king of the guidos, that's how ripped he is. He enters the experience with the intent of not falling in love down in the Jersey Shore. However, he ultimately breaks his own rule... a softie.

Mike Sorrentino, an assistant manager of a fitness center in Staten Island, refers to himself as "The Situation." Although cocky on the outside, The Situation has a sensitive side and aspires to settle down in the future. A confident individual, he strikes up friendships, romances and performs well in Jersey Shore.

Take an adventure in Kenya and prepare to be amazed by the extraordinary wildlife... A significant population of other wild animals, reptiles and birds can be found in the national parks and game reserves in the country. Prepare for safari heaven!

Sit back, relax and enjoy the nature sounds of Japan as you contemplate the sheer beauty of the natural world in all its inconstancy and imperfection.

The cicadas of Thailand has a total of 152 species with 5 additional varieties and one undescribed species from 35 genera have been identified. Cicadas emit their varied calls from dawn to dusk with some of the eeriest coming after nightfall. The orchestra of cicadas fills the gentle sloping hills of Northern Thailand.

In Northern Thailand, insects are considered delicacies. It's hard to find a species of insect that is not consumed by the local people. Nutritionally speaking, eating insects in Thailand makes sense. They are a good source of protein, and apparently have lots of other goodies like vitamins and minerals.