Design, Engineering & Technology
How to detect a supernova
Lesson duration 04:42
Just now, somewhere in the universe, a star exploded. In fact, a supernova occurs every second or...
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Results for "nick hilditch" (14)
Thinking & Learning
How did clouds get their names?
Lesson duration 05:07
The study of clouds has always been a daydreamer’s science, aptly founded by a thoughtful young...
Science & Technology
Could we actually live on Mars?
Lesson duration 04:30
There's a lot of talk these days about when and how we might all move to Mars. But what would it...
Design, Engineering & Technology
Camera or eye: Which sees better?
Lesson duration 04:57
Your eyes don’t always capture the world exactly as a video camera would. But the eyes are...
Design, Engineering & Technology
How does your smartphone know your location?
Lesson duration 05:03
GPS location apps on a smartphone can be very handy when mapping a travel route or finding nearby...
Thinking & Learning
5 tips to improve your critical thinking
Lesson duration 04:30
Every day, a sea of decisions stretches before us, and it’s impossible to make a perfect choice...
Mathematics
Why can't you divide by zero?
Lesson duration 04:51
In the world of math, many strange results are possible when we change the rules. But there’s one...
Geometry
How many ways are there to prove the Pythagorean theorem?
Lesson duration 05:17
What do Euclid, 12-year-old Einstein, and American President James Garfield have in common? They...
Science & Technology
What’s the smallest thing in the universe?
Lesson duration 05:21
If you were to take a coffee cup, and break it in half, then in half again, and keep carrying on,...
Design, Engineering & Technology
Why don’t companies want you to repair your stuff?
Lesson duration 06:05
Today, some companies are working hard to prevent consumers from repairing products on their own....
Health
Can steroids save your life?
Lesson duration 05:32
Steroids: they’re infamous for their use in sports, but they’re also found in inhalers, creams to...
Science & Technology
The mysterious origins of life on Earth
Lesson duration 04:57
Billions of years ago, simple organic compounds assembled into more complex coalitions that could...
Environmental Science
Whatever happened to acid rain?
Lesson duration 05:40
In 1963, scientists studying Hubbard Brook Experimental Forest made a shocking discovery. Their...
Science & Technology
Are the Northern Lights dangerous?
Lesson duration 05:10
In September 1859, miners following the Colorado gold rush woke up to another sunny day. Or so...