About National Academy of Engineering's Grand Engineering Challenges for the 21st Century results of 10,000

Relevance
Barack Obama | Candidates at Google64:32

Barack Obama | Candidates at Google

203
B1
TWICE Pre-release english track "MOONLIGHT SUNRISE" M/V03:24

TWICE Pre-release english track "MOONLIGHT SUNRISE" M/V

48
B2
咖啡貓姐妹 吉他彈唱 "To Know Him Is to Love Him" Official HD官方英文歌詞字幕版02:46

咖啡貓姐妹 吉他彈唱 "To Know Him Is to Love Him" Official HD官方英文歌詞字幕版

302
A1
Baton Rouge Vacation Travel Guide | Expedia06:30

Baton Rouge Vacation Travel Guide | Expedia

190
B2
Geography Now! Philippines19:42

Geography Now! Philippines

13
B1
Studying Engineering Southern Cross University02:44

Studying Engineering Southern Cross University

1
B1
Paris: Regal and Intimate24:58

Paris: Regal and Intimate

576
B2
Solar and wind beat coal for first time: BBC Learning English from the News06:20

Solar and wind beat coal for first time: BBC Learning English from the News

13233
B1
Twenty One Pilots - Stressed Out ( cover by J.Fla )03:07

Twenty One Pilots - Stressed Out ( cover by J.Fla )

506
A2
Why rural America needs telehealth07:53

Why rural America needs telehealth

25
B1
07 English Vocabulary in Use Advanced Unit 25-2809:43

07 English Vocabulary in Use Advanced Unit 25-28

19
B1
Terrorism, War, and Bush 43: Crash Course US History #4615:27

Terrorism, War, and Bush 43: Crash Course US History #46

502
B1
Carlos Slim22:59

Carlos Slim

93
B1
"Closer" // English Song Spotlight (The Chainsmokers feat. Halsey)09:35

"Closer" // English Song Spotlight (The Chainsmokers feat. Halsey)

4042
A2
A Threatened National Treasure: The Fiji Banded Iguana Morphs for Survival01:05

A Threatened National Treasure: The Fiji Banded Iguana Morphs for Survival

116
B1
NATIONAL CABBAGE DAY- what national day is february 1700:49

NATIONAL CABBAGE DAY- what national day is february 17

60
B2
Why I’m Jumping Into The Grand Canyon | STORYTIME07:38

Why I’m Jumping Into The Grand Canyon | STORYTIME

6
A2
English Conversation rachel's english19:49

English Conversation rachel's english

214
B1
Symbioses Are Way More Complex Than You Think!06:29

Symbioses Are Way More Complex Than You Think!

18
B2
The Beatles - Hey Jude ( cover by J.Fla )02:04

The Beatles - Hey Jude ( cover by J.Fla )

733
A1
How to write a perfect cover letter in English | Business English Course Lesson 210:50

How to write a perfect cover letter in English | Business English Course Lesson 2

35868
A2
Why You Couldn’t Afford To Fly Concorde13:42

Why You Couldn’t Afford To Fly Concorde

88
B2
The Country That Becomes a Racetrack05:27

The Country That Becomes a Racetrack

17715
A1
Top Five (2014) - DMX Sings "Smile" Scene (10/10) | Movieclips01:44

Top Five (2014) - DMX Sings "Smile" Scene (10/10) | Movieclips

7
A2
HIV Care Continuum Initiative of the National HIV/AIDS Strategy02:57

HIV Care Continuum Initiative of the National HIV/AIDS Strategy

47
B1
Great Sand Dunes National Park05:45

Great Sand Dunes National Park

5
B2
How Kendrick Lamar Beat Drake At His Own Game11:37

How Kendrick Lamar Beat Drake At His Own Game

49
B2
The Perfect to 2 Day Itinerary for Yosemite National Park in September21:33

The Perfect to 2 Day Itinerary for Yosemite National Park in September

13
B1
Top 10 Signs That GLOBAL WARMING Is NO LONGER A Debate09:59

Top 10 Signs That GLOBAL WARMING Is NO LONGER A Debate

653
B2
Huawei: The Big Picture12:20

Huawei: The Big Picture

57
B1
Check Out The Back Of This Smartphone06:07

Check Out The Back Of This Smartphone

6
B1
Daily Live Homeroom With Sal: Wednesday, March 2534:19

Daily Live Homeroom With Sal: Wednesday, March 25

4
A2
The Script - Hall of Fame (Official Video) ft. will.i.am03:54

The Script - Hall of Fame (Official Video) ft. will.i.am

10566
A2
Formal definition of limits Part 1: intuition review | AP Calculus AB | Khan Academy03:36

Formal definition of limits Part 1: intuition review | AP Calculus AB | Khan Academy

9
A2
National Standard For DSMES 8: Ongoing Support01:07

National Standard For DSMES 8: Ongoing Support

3
B2
Reform in the Gilded Age | AP US History | Khan Academy08:08

Reform in the Gilded Age | AP US History | Khan Academy

6
B1
Pawn Stars: RARE 10TH CENTURY RELIC IS A FAKE (Season 11) | History05:39

Pawn Stars: RARE 10TH CENTURY RELIC IS A FAKE (Season 11) | History

5
A2
Phineas and Ferb NEW Season 5 Extended Sneak Peek: Summer Block Buster!!!⛱️ | @disneychannel09:10

Phineas and Ferb NEW Season 5 Extended Sneak Peek: Summer Block Buster!!!⛱️ | @disneychannel

11155
A2
45 MINUTES of SpongeBob Songs ? | @SpongeBobOfficial47:16

45 MINUTES of SpongeBob Songs ? | @SpongeBobOfficial

19
B1
Visualizing a Plenitude Economy04:51

Visualizing a Plenitude Economy

374
B1
Economic Calendar of The Week - August 3-7, 201502:13

Economic Calendar of The Week - August 3-7, 2015

155
B1
10 Best Uses of Color of All Time13:01

10 Best Uses of Color of All Time

2419
B2
Scaling functions horizontally: examples | Transformations of functions | Algebra 2 | Khan Academy08:09

Scaling functions horizontally: examples | Transformations of functions | Algebra 2 | Khan Academy

1
A2
24 Phrasal Verbs for Business - Business English Phrasal Verbs Lesson12:19

24 Phrasal Verbs for Business - Business English Phrasal Verbs Lesson

46
B1
Cancer | Cells | MCAT | Khan Academy12:36

Cancer | Cells | MCAT | Khan Academy

24
B2
Melbourne Vacation Travel Guide | Expedia04:51

Melbourne Vacation Travel Guide | Expedia

2402
B1