Bullfrog brains have a hidden superpower

Researchers have uncovered a hidden biological superpower in bullfrogs: When their brains run low on energy, they can make their own emergency fuel supply.

That could mean good things for human health.

For decades, scientists believed most animals relied on a steady supply of glucose, the body’s primary fuel source, to power their brains. When glucose runs out, neural activity begins to fail, potentially leading to lasting brain damage.

Now, researchers at t...