What If

What If: These two simple words are the spark that has ignited countless theories, discoveries, and inventions. Most of what we know about ourselves and the universe is because someone, somewhere, at some time asked themselves “What if?” Join us on an imaginary adventure — grounded in scientific theory — through time, space and chance, as we ask what if some of the most fundamental aspects of our existence were different.

Last Episode
Apr 5th, 2021 What If...
# Title Aired
1 What If Bees Disappeared?
2 What If the Sun Disappeared
3 What If the World Ran out of Oil Today?
4 What If the Earth Was Actually Flat?
5 What If Earth Suddenly Stopped Spinning
6 What If the Internet Stopped Working
7 What If All the World's Ice Melted?
8 What If the Moon Landing Was Indeed Faked?
9 What If You Suddenly Lost All Your DNA?
10 What If Earth's Magnetic Poles Flipped?
11 What If We Dug a Hole Through the Earth?
12 What If Gravity Suddenly Went Away?
13 What If NASA Had a Budget like the US Military
14 What If Money Didn't Exist?
15 What If All Continents Joined Back Together?
16 What If You Fell Into a Black Hole?
17 What If Everyone in the World Was Vegan
18 What If You Made an Actual Model of the Periodic Table?
19 What If Dinosaurs Never Went Extinct?
20 What If There Was a Robot Apocalypse Today?
21 What If We Drained the Oceans?
22 What If We Suddenly Lost the Moon?
23 What If All the Coral Reefs Died Out?
24 What If Plastic Was Never Invented?
25 What If Earth Spun Twice as Fast?
26 What If Earth Suddenly Lost Its Atmosphere?
27 What If the Moon Fell to Earth?
28 What If Earth Doubled in Size?
29 What If We Stopped Burning Fossil Fuels Right Now?
30 What If a Nuke Goes Off in Washington D.C.?
31 What If an Asteroid Hit the Earth?
32 What If We Terraformed the Moon?
33 What If You Had 100 Billion Dollars?
34 What If Time Travel Was Possible?
35 What If We Could Breathe Underwater?
36 What If All Volcanoes Erupted at Once?
37 What If Our Sun Were to Die Tomorrow?
38 What If All Cars Went Electric?
39 What If We All Lived on Mars
40 What If We Could Communicate Directly From Brain to Brain?
41 What If All Humans Suddenly Disappeared From The Earth
42 What If The Universe Stopped Expanding?
43 What If All Insects Disappeared From the Planet?
44 What If the Earth's Core Cooled Down
45 What If the Milky Way and Andromeda Galaxies Collided?