full transcript

From the Ted Talk by Magnus Larsson: Turning dunes into architecture

Unscramble the Blue Letters

Now, sand denus coevr only about one fifth of our deesrts. And still, those extreme environments are very good places if we want to stop the sihiftng snads. Four years ago, 23 African countries came together to create the Great geren Wall Sahara. A fantastic project, the initial plan called for a shelter belt of trees to be planted right across the African continent, from Mauritania in the west, all the way to Djibouti in the east. If you want to stop a sand dune from moving, what you need to make sure to do is to stop the grains from ahnvacianlg over its crest. And a good way of doing that, the most efficient way, is to use some kind of sand catcher. Trees or cacti are good for this. But, one of the problems with ptnainlg trees is that the people in these regions are so poor that they chop them down for fewioord.

Open Cloze

Now, sand _____ _____ only about one fifth of our _______. And still, those extreme environments are very good places if we want to stop the ________ _____. Four years ago, 23 African countries came together to create the Great _____ Wall Sahara. A fantastic project, the initial plan called for a shelter belt of trees to be planted right across the African continent, from Mauritania in the west, all the way to Djibouti in the east. If you want to stop a sand dune from moving, what you need to make sure to do is to stop the grains from ___________ over its crest. And a good way of doing that, the most efficient way, is to use some kind of sand catcher. Trees or cacti are good for this. But, one of the problems with ________ trees is that the people in these regions are so poor that they chop them down for ________.

Solution

  1. avalanching
  2. shifting
  3. planting
  4. sands
  5. deserts
  6. cover
  7. green
  8. dunes
  9. firewood

Original Text

Now, sand dunes cover only about one fifth of our deserts. And still, those extreme environments are very good places if we want to stop the shifting sands. Four years ago, 23 African countries came together to create the Great Green Wall Sahara. A fantastic project, the initial plan called for a shelter belt of trees to be planted right across the African continent, from Mauritania in the west, all the way to Djibouti in the east. If you want to stop a sand dune from moving, what you need to make sure to do is to stop the grains from avalanching over its crest. And a good way of doing that, the most efficient way, is to use some kind of sand catcher. Trees or cacti are good for this. But, one of the problems with planting trees is that the people in these regions are so poor that they chop them down for firewood.

Frequently Occurring Word Combinations

ngrams of length 2

collocation frequency
sand dunes 3
sandstone wall 2
sand dune 2
planting trees 2
habitable spaces 2
bacillus pasteurii 2
cubic meter 2

Important Words

  1. african
  2. avalanching
  3. belt
  4. cacti
  5. called
  6. catcher
  7. chop
  8. continent
  9. countries
  10. cover
  11. create
  12. crest
  13. deserts
  14. djibouti
  15. dune
  16. dunes
  17. east
  18. efficient
  19. environments
  20. extreme
  21. fantastic
  22. firewood
  23. good
  24. grains
  25. great
  26. green
  27. initial
  28. kind
  29. mauritania
  30. moving
  31. people
  32. places
  33. plan
  34. planted
  35. planting
  36. poor
  37. problems
  38. project
  39. regions
  40. sahara
  41. sand
  42. sands
  43. shelter
  44. shifting
  45. stop
  46. trees
  47. wall
  48. west
  49. years