Are You Brave Enough To Cross These Death-Defying Bridges?

The More You Know

• There are snakes with two heads, which compete with each other for food.
• You only breathe out of one nostril at a time.
• A Nepalese doctor has restored the sight of over 100,000 often poverty-stricken people in the last thirty years across Asia and Africa using a 5 minute procedure and an inexpensive artificial lens.
• The largest known living organism is an aspen grove.