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Mystery Doug

129 Videos (Page 1/3)

6:22 Fast English (US)

Why do fireflies glow?

Mystery Doug & Mystery Science - 2 years ago

46,651 views
6:18 Fast English (US)

Why are some people left-handed?

Mystery Doug - 3 years ago

10,489 views
7:16 Fast English (US)

Why do flies just appear in the trash?

Mystery Doug - 3 years ago

47,698 views
7:32 Fast English (US)

What's the longest anyone's ever stayed awake?

Mystery Doug - 3 years ago

25,857 views
6:27 Conversational English (US)

What's the biggest shark that ever lived?

Mystery Doug - 3 years ago

556,564 views
6:24 Fast English (US)

How do they make imaginary movie characters look so real?

Mystery Doug - 3 years ago

185,108 views
7:47 Fast English (US)

How do some people get so good at sports?

Mystery Doug - 3 years ago

50,496 views
6:58 Fast English (US)

Do any plants eat animals?

Mystery Doug - 3 years ago

13,945 views
7:07 Fast English (US)

Who invented school?

Mystery Doug - 3 years ago

38,069 views
7:23 Fast English (US)

What does a scientist do?

Mystery Doug - 3 years ago

7,660 views
7:08 Fast English (US)

How do you build a bridge that lasts for 100 years?

Mystery Doug - 3 years ago

4,655 views
5:48 Fast English (US)

Can animals be friends with other kinds of animals?

Mystery Doug - 3 years ago

37,632 views
7:40 Fast English (US)

How were bicycles invented?

Mystery Doug - 3 years ago

170,889 views
8:19 Fast English (US)

How do scientists learn about wild animals?

Mystery Doug - 3 years ago

182,839 views
7:30 Fast English (US)

What's the fastest ocean animal?

Mystery Doug - 3 years ago

223,235 views
7:35 Fast English (US)

Can animals really predict the weather?

Mystery Doug - 3 years ago

242,741 views
7:01 Fast English (US)

Could you make a real lightsaber?

Mystery Doug - 4 years ago

220,459 views
4:59 Fast English (US)

How are waves made in the ocean?

Mystery Doug - 4 years ago

235,106 views
8:10 Fast English (US)

What's the coldest temperature any animal could survive?

Mystery Doug - 4 years ago

153,632 views
7:31 Fast English (US)

Can my pet understand what I'm saying?

Mystery Doug - 4 years ago

345,449 views
6:02 Fast English (US)

Why don't all trees lose their leaves in the fall?

Mystery Doug - 4 years ago

153,756 views
7:34 Fast English (US)

Why don't islands float away?

Mystery Doug - 4 years ago

276,433 views
7:13 Fast English (US)

How was basketball invented?

Mystery Doug - 4 years ago

260,986 views
8:05 Fast English (US)

How do lizards regrow their tails?

Mystery Doug - 4 years ago

455,565 views
7:23 Fast English (US)

How do jellyfish sting?

Mystery Doug - 4 years ago

1,008,454 views
8:12 Fast English (US)

Do sharks really want to eat people?

Mystery Doug - 4 years ago

1,896,217 views
8:29 Fast English (US)

How were LEGO bricks invented?

Mystery Doug - 4 years ago

496,930 views
7:20 Fast English (US)

What's the deepest hole anyone has ever dug?

Mystery Doug - 4 years ago

2,542,324 views
9:05 Fast English (US)

Why can't we remember being babies?

Mystery Doug - 4 years ago

697,625 views
7:13 Fast English (US)

Do people really use robots?

Mystery Doug - 4 years ago

321,587 views
6:56 Fast English (US)

How are magnets made?

Mystery Doug - 4 years ago

532,397 views
8:23 Fast English (US)

Are butterflies the only animals that start out as caterpillars?

Mystery Doug - 4 years ago

629,798 views
8:06 Fast English (US)

What's the best place to look for dinosaur fossils?

Mystery Doug - 4 years ago

506,792 views
7:38 Fast English (US)

Is it possible to become invisible?

Mystery Doug - 4 years ago

556,867 views
7:27 Fast English (US)

What's the fastest baseball ever thrown?

Mystery Doug - 4 years ago

700,817 views
8:02 Fast English (US)

How are books made?

Mystery Doug - 4 years ago

317,458 views
6:40 Fast English (US)

Why do beavers build dams?

Mystery Doug & Mystery Science - 4 years ago

477,562 views
6:51 Fast English (US)

How do vaccines work?

Mystery Doug & Mystery Science - 4 years ago

487,412 views
6:40 Fast English (US)

Which animal has the biggest heart?

Mystery Doug - 4 years ago

1,108,056 views
6:13 Fast English (US)

What's the tallest skyscraper anyone can build?

Mystery Doug - 4 years ago

469,984 views
6:36 Fast English (US)

How are video games made?

Mystery Doug - 4 years ago

963,590 views
7:36 Fast English (US)

What were the first computers like?

Mystery Doug - 4 years ago

355,276 views
8:12 Fast English (US)

Are mermaids real?

Mystery Doug & Mystery Science - 5 years ago

4,298,767 views
6:05 Fast English (US)

How do polar animals survive the cold?

Mystery Doug - 5 years ago

277,561 views
7:14 Fast English (US)

What was the first cartoon?

Mystery Doug - 5 years ago

579,004 views
7:22 Fast English (US)

How do we know the Earth is round?

Mystery Doug & Mystery Science - 5 years ago

510,146 views
7:27 Fast English (US)

What do garbage trucks do with garbage?

Mystery Doug - 5 years ago

707,712 views
6:22 Fast English (US)

Who invented candy?

Mystery Doug - 5 years ago

885,482 views
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