Photo of the Day
Waterfall
April 25, 2010
Iguaçu Falls
This Month in Photo of the Day: Nature and Environment
A wealth of water—up to 1.6 million gallons (6.1 million liters) a second—pours over Iguaçu Falls on the border of Brazil and Argentina.
See more photographs from the April 2010 National Geographic feature story "Water Is Life."
DON'T MISS THE REST OF THIS STORY!
Create a free account to continue and get unlimited access to hundreds of Nat Geo articles, plus newsletters.
Go Further
Animals
- How can you tell if a wild animal really needs your help?How can you tell if a wild animal really needs your help?
- Fireflies are vanishing—but you can help protect themFireflies are vanishing—but you can help protect them
- Could this simple plan save Africa's most mysterious cat?Could this simple plan save Africa's most mysterious cat?
- This ray is vanishing from our oceans—and being made into jewelryThis ray is vanishing from our oceans—and being made into jewelry
- Why 4 dead California sea otters have scientists so alarmedWhy 4 dead California sea otters have scientists so alarmed
Environment
- What the Air Quality Index measures—and what to do when it’s code redWhat the Air Quality Index measures—and what to do when it’s code red
- Seaweed may play a big role in the fight against climate changeSeaweed may play a big role in the fight against climate change
- Is banning fishing bad for fishermen? Not in this marine reserveIs banning fishing bad for fishermen? Not in this marine reserve
History & Culture
- Soccer is the world's most popular sport. But who invented it?Soccer is the world's most popular sport. But who invented it?
- 2,000 years of shipwrecks discovered on ancient sea route2,000 years of shipwrecks discovered on ancient sea route
- See scenes from classic fairy tales—with a Nigerian twistSee scenes from classic fairy tales—with a Nigerian twist
- How the ‘Magna Carta of AIDS activism’ sparked a revolutionHow the ‘Magna Carta of AIDS activism’ sparked a revolution
Science
- 5 green towers inspired by nature and striving to protect it
- Paid Content for Advertiser
5 green towers inspired by nature and striving to protect it - Sugar doesn’t actually make kids hyper—here’s why so many believe it doesSugar doesn’t actually make kids hyper—here’s why so many believe it does
- When it’s too cold, these octopuses just rewire their brainsWhen it’s too cold, these octopuses just rewire their brains
- What is yerba mate—and is this caffeinated drink really good for you?What is yerba mate—and is this caffeinated drink really good for you?
- Is organic food healthier? That’s the wrong question.Is organic food healthier? That’s the wrong question.
Travel
- 4 food-forward European cities for 2023
- Paid Content for Advertiser
4 food-forward European cities for 2023 - One of these 7 places may be America’s next national parkOne of these 7 places may be America’s next national park
- Where to stay in Manila: the Filipino capital's coolest hotelsWhere to stay in Manila: the Filipino capital's coolest hotels
- This Polynesian canoe is set to voyage 43,000 milesThis Polynesian canoe is set to voyage 43,000 miles
- The inside guide to Cádiz: an underrated Andalucian city breakThe inside guide to Cádiz: an underrated Andalucian city break
