Humans have a vestigial muscle called the palmaris longus that once helped ancestors climb trees — about 14% of people lack it.

The 2018 Camp Fire became one of California's deadliest wildfires.

Lahar — volcanic mudflow — can travel faster than a person can run and extends the danger zone far beyond the eruption.

You are more likely to be struck by lightning than win many major lottery jackpots.

The world's deepest cave, Veryovkina in Georgia, descends 2,212 meters below the surface.

The lotus plant is known for self-cleaning leaves — water rolls off in droplets, taking dirt with it (the lotus effect).

Certain plants have waxy leaves to reduce water loss.

Roman concrete contains volcanic ash that continues to strengthen over centuries, unlike modern concrete.

Trees in a drought will 'talk' to each other through chemical signals in the soil, triggering defensive responses in nearby trees.