Seven out of 10 of Brazil’s biggest cities depend on this forest for water and electricity.
A new book looks at sustainable development opportunities in one resource-rich but poverty-stricken country.
Filming Bogotá from the air, I wonder how many people below know where their water comes from.
Fresh water is surpassing oil as the world’s scarcest critical resource — and increasingly becoming a source of conflict.
To learn about food security, a new CI employee volunteered at an urban farm.
Peter Seligmann looks back on 42 years of Earth Day — and looks ahead hopefully at the challenges before us.
We all need water, but the fact remains that businesses are responsible for the lion’s share of daily freshwater use.
Knowledge passed down through many generations offers valuable insights for climate change adaptation.
The message is clear: The pressures on Earth are large and potentially disastrous.
Since 1990, more than 2 billion people have gained access to an improved source of drinking water. But more needs to be done.