Health
Is radiation dangerous?
Lesson duration 05:21
When we hear the word radiation, it’s tempting to picture huge explosions and frightening...
Results for "radiation" (53)
Health
The Most Radioactive Places on Earth
Lesson duration 11:17
Who on Earth is exposed to the most ionizing radiation? Derek Muller from Veritasium investigates.
Design, Engineering & Technology
How to perform brain surgery without making a single cut
Lesson duration 05:18
Every year, tens of thousands of people have brain surgery without a single incision: there’s no...
Science & Technology
Can you survive nuclear fallout?
Lesson duration 05:25
Nuclear weapons are some of the most powerful tools of destruction on Earth, and the full scope...
Science & Technology
What would it be like to live on the moon?
Lesson duration 04:52
The European Space Agency is hoping to establish an inhabited research base on the moon by the...
When giant scorpions swarmed the seas
Lesson duration 11:41
Sea scorpions thrived for 200 million years, coming in a wide variety of shapes and sizes. Over...
Science & Technology
The physics behind Einstein’s most famous equation
Lesson duration 05:26
Ever since Einstein published his Special Theory of Relativity, one equation has been the bane of...
Technology
Mysteries of vernacular: X-ray
Lesson duration 01:59
The story of the word X-Ray is one of great thinkers. French philosopher Rene Descartes...
Design, Engineering & Technology
Could a breathalyzer detect cancer?
Lesson duration 04:40
How is it that a breathalyzer can measure the alcohol content in someone’s blood, hours after...
Life Sciences
Meet the tardigrade, the toughest animal on Earth
Lesson duration 04:10
Without water, a human can only survive for about 100 hours. But there’s a creature so resilient...
Earth and Space Science
Could we survive prolonged space travel?
Lesson duration 04:56
Prolonged space travel plays a severe toll on the human body: microgravity impairs muscle and...
Science & Technology
Could we steal the power of a black hole?
Lesson duration 05:42
Imagine a distant future when humans reach beyond Earth, forge cities on planets thousands of...
Science & Technology
What you can do with an extra jaw
Lesson duration 05:19
After stalking a cuttlefish, a moray eel finally pounces. As the eel snags the mollusk in its...
Science & Technology
How cosmic rays help us understand the universe
Lesson duration 04:40
We only know 4% of what the universe is made up of. Can we also know what lies beyond our galaxy...
Design, Engineering & Technology
Under the hood: The chemistry of cars
Lesson duration 04:34
There are over one billion cars in the world right now, getting people from point A to point B....
Life Sciences
The three different ways mammals give birth
Lesson duration 04:50
All mammals share certain characteristics, like warm blood and backbones. But despite their...
Health
How do doctors determine what stage of cancer you have?
Lesson duration 05:29
Each year, approximately 20 million people receive a cancer diagnosis. At that time, a patient...
Earth and Space Science
Is space trying to kill us?
Lesson duration 03:31
How likely is it that a massive asteroid will do major damage to Earth and its inhabitants? What...