10:00The Arcade
Spore Wars
Sporty is a spore: Bacillus coagulans packed into a tough, seed-like coat. Steer him across Acid Lake without cracking it. In real life he doesn’t need you. Play anyway.

Coat
pH2.5
Route0% to the Valve
Now playing · CH 4
Steer Sporty across Acid Lake
Dodge the acid drops for 40 seconds and reach the Valve. Three cracks in the coat and Sporty hatches too early.
8:30Meanwhile, in real life
How a spore gets through
Same ride, at the speed of a real stomach: a few hours, not forty seconds.
- Suit upWhen times get tough, B. coagulans packs its DNA into a spore: a dry, tough coat built in layers. It can sit out heat and dryness for a very long time.
- Acid LakeYour stomach runs at about pH 1.5 to 3.5, strong enough to fizzle most bacteria, while pepsin starts snipping proteins. The spore coat shrugs off both.
- The ValveThe pyloric sphincter, a ring of muscle at the bottom of the stomach, lets the contents through a little at a time.
- HatchIn the small intestine, bicarbonate from the pancreas brings the pH up toward neutral. The spore germinates and Sporty is a rod again, making lactic acid.
Far-out fact
Your stomach runs at about pH 1.5 to 3.5: lemon-juice sour, give or take. A spore is how B. coagulans gets through. It’s a survival suit, not a superpower.
Gastric juice is mostly water, hydrochloric acid and pepsin. The stomach protects its own lining with a layer of mucus.
Coming up next on Channel GG
Build-a-Microbe
Rods, branches, spores and sneakers. Mostly sneakers.