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A mushroom cloud from an explosion.

Could nuclear testing cause earthquakes?

... Both of them can generate little earthquakes on their own, as to whether they can generate a big earthquake, the ... in is not enough to generate a big earthquake on it's own. Unfortunately, we don't know much about where the big ...

How is Cape Town running out of water?

... 6,400 waiting for boreholes so everyone’s making their own salvation here, digging a borehole. This is going to to ... or whisky are very intensive, so don’t make your own because there’s thousands and thousands of litres of ...

Jet engine turbine

How does a jet engine get started?

... start it burning, and then once it's going, it's got its own ability to carry itself. Dave - Yeah, pretty much! Also, ...

Could I construct a dome to cover a whole city?

... much the forces required to make a dome that holds up its own weight. It's all the extra forces like weather, wind, ...

A microwave

Why don't microwaves spark off themselves?

... and forwards in that metal. Now, if that metal is on its own and insulated from everything else, that will just cause ...

A Car

What materials does a car consist of?

... a bit cheaper, we want to be able to afford them from our own pockets so we quite often use more common alloys such as ...

waterproof coat

What actually makes a waterproof coat waterproof?

... really quickly. So it increased it by 800 times it’s own size and created something that was about 70% air. This ...

Why do some airlines permit the use of mobile phones?

... on-board the aeroplane which uses the aeroplane's own communication systems to route your call to whatever ...

Phytoplankton - the foundation of the oceanic food chain

Could we modify plankton to clean up the ocean?

... huge knock on effects to the whole ecosystem as well. My own research has found that they can decrease the biomass of ...

Maths on blackboard

What's the difference between relative and absolute risk?

... number of people. A relative risk makes no sense on it’s own - it’s only relative to something else. Chris - But if ...

Rocket

Do rockets launched from tubes travel faster?

... hand, is constantly accelerating as it carries all of its own fuel and burns it as it goes. Ignition sequence starts… ...

How does a white LED work?

... a mixture of colours and if you were to use LEDs on their own you would need 3 LEDs to make white light. Manufacturers ...

An enigma machine, used by German forces in the Second World War to send coded messages

How do the coding machines used in WWII work?

... the machine worked itself and then they could build their own replicas. The Polish did have methods to break those ...

Robots

Will nanobots destroy the world?

... to design deliberately is something that comes with its own powerpack. That is completely adaptable to all sorts of ...

Silly Putty

How much silly putty would cover the Earth?

... or two peculiar properties that if you let it sit on its own, it will actually flow like you would imagine a normal ...

Light bulb moments

What's your favourite accidental scientific discovery?

... took off! So then he was like “oh, did she just fake her own death so she didn’t have to mate?” And he did a ...