47,749,673 Videos Watched

Age Filter: Click to Set

Embed Video
Embed Video:
URL of source video:
Simply give the URL and we will get the embed code automatically, if we support embedding from the site.
Directory

Expedition Blue Planet- Angkor: Lessons for the Modern World

View Video



Some content viewed on WatchKnowLearn is hosted by other websites.

Rating:

Not Right For WatchKnowLearn

Remember to Rate

Not Right For WatchKnowLearn
WatchKnowLearn ratings are intentionally harsher than what you might find on YouTube, for example. Most of our videos have been imported by people who want to use them with kids, not by the creators of the videos. We take a hard-nosed attitude toward quality. Four and five stars should be reserved for really excellent quality. Three stars isn't bad. Two is often watchable and shouldn't be ruled out.

  • 5 stars = Exemplary.
    Unusually helpful and well produced. Do not overuse this, please; it is not the standard rating for decent work, as it is elsewhere.
  • 4 stars = Very Good.
    Very helpful but not among the very best; adequately produced, at least.
  • 3 stars = Usable.
    Reasonably helpful, perhaps a bit amateurish in production or has some other problem; there is nothing wrong with a 3-star rating for amateur work!
  • 2 stars = Some Merit.
    Minimally helpful; not completely worthless or inappropriate; you can see how it might be useful to some people.
  • 1 star = Not Right for WatchKnowLearn.
    Not at all helpful, not educational, poorest quality, etc.; you can't see it being useful to anyone.

More help with rating

Add To Favorites
Add To Classroom
Flag This Video

787  views

From snagfilms.com (Approved: Mrs Jefferies), produced by Alexandra Cousteau
 
Cambodia serves as another case study of an environmental phenomenon affecting the entire planet.A World Heritage Site, Angkor is one of the most important archaeological sites in South-East Asia. Stretching over some 400 square kilometers, the park contains the magnificent remains of the Khmer Empire, dating from the 9th to the 15th century AD.Today, researchers believe that water scarcity may have caused the demise of what was one of the largest and most important civilizations of its time. By destroying vast tracts of forest to enlarge their farmland, inhabitants of the city of Angkor lit the fuse to an ecological time bomb. Flooding ensued, and huge amounts of sediment and sand washed down the mountains, filling up canals, and possibly choking the vital water management system, thereby making the society vulnerable to attack and invasion.Furthermore,Cambodia serves as another case study of an environmental phenomenon affecting the entire planet: climate change is causing our glaciers, from the Arctic tundra to the Swiss Alps to the Himalayas, to melt away. As with the Ganges in India, Cambodia along with neighboring China, Burma, Thailand, Laos, and Vietnam will suffer tragic consequences if and when the great Mekong River becomes a seasonal river.
 
Ages: 10 - 18 License: Proprietary Owner: Alexandra Cousteau Found by Mrs Jefferies
  • Unless changed, the Finder is the person who uploaded the video to WatchKnowLearn.
  • The Finder is allowed to "lock" information about the Owner and Producer (so other accounts cannot edit this information). The Finder field should match the Owner field when a video is entered in a contest.
  • As owner of a video, you can have finder rights transferred to you.
Simply click "Request Finder Rights" and an e-mail will be sent to the current Finder of the video. The Finder may then transfer rights to you. If he or she does not, bear in mind that an Administrator will see the refusal of your request and will be able to review it.

More help about the Finder field
 

History [show]


Loading history...

Comments
Please make your comments on videos positive, and not just negative.

People work hard on educational videos, and we want to encourage them to make more!

  • Profanity (curse words), sexually suggestive remarks, and other such obviously inappropriate comments will be deleted immediately, and are grounds for immediate expulsion. Remember, children use this website.
  • Personal criticism on project forums and in video content is not allowed and will be deleted immediately. Any violations of this rule could result in expulsion from the project so please, no insults or other negative personal remarks.
  • Very harshly-worded criticism of content will also be deleted promptly. Please use your vote to express your harshest feelings. Repeated violations of this rule can result in expulsion. If you must criticize another person's hard work, then be nice about it.
If you want to comment, please sign in

Share