great lakes

The yearly maximum frozen surface area of Lake Michigan has decreased on average from the early 1970s to 2023.

It’s estimated North America has lost more than three billion birds over the past 50 years — mostly due to climate change and habitat loss.

Scientists are building a sensor network to spot Lake Huron water chemistry trends. It’s a first step toward a hoped-for system that would track carbon dioxide and pH in all five Great Lakes over multiple years.